scholarly journals Analisis Kekuatan Struktur pada Gerbong Datar

MESIN ◽  
2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Teddy Andreas ◽  
Tono Sukarnoto ◽  
Soeharsono Soeharsono
Keyword(s):  
Yield Strength ◽  
Load Capacity ◽  
Maximum Load ◽  
Von Mises Stress ◽  
Total Deformation ◽  
Analysis Process ◽  
Safe Area ◽  
Original Size ◽  
Von Mises ◽  
Bottom Frame

<p><em>The PPCW railroad flatcars is railroad flatcars used to transport container loads with a maximum load capacity of up to 42 tons. In its use, these railroad flatcars are used to transport the cement bags in the pallet arrangement resulting in crack in the bottom frame of the PPCW railroad flatcars structure. The purpose of this analysis is to find out stress value and deformation value that occurred in the railroad flatcars due to the cement bags loading. The analysis process begins with modeling according to the original size of the railroad flatcars which is then followed by providing the support, gravity, loads, and material specifications used. Based on the result of analysis that has been obtained from the load of cement bags of 546,000 N and ratchet lashing of 900,000 N on the frame of PPCW railroad flatcars, we obtained the maximum von Mises stress value of 231.91 MPa arising on the bottom frame of the PPCW railroad flatcars structure as the site of cracking and the maximum total deformation value of 19.526 mm arising in the center of the railroad flatcars. The PPCW railroad flatcars made from SS400 with yield strength value of 245 MPa. Therefore, it was found that the value of stress arising in the railroad flatcars is still in the safe area and is allowed</em><em>.</em><em></em></p>

scholarly journals Biomechanical Behavior Evaluation of a Novel Hybrid Occlusal Splint-mouthguard for Contact Sports: 3D-FEA

2021 ◽  
Author(s):  
Les Kalman ◽  
Amanda Maria de Oliveira Dal Piva ◽  
Talita Suelen de Queiroz ◽  
João Paulo Mendes Tribst
Keyword(s):  
Stress Concentration ◽  
Mechanical Response ◽  
Compressive Loading ◽  
Von Mises Stress ◽  
Occlusal Splint ◽  
Total Deformation ◽  
Contact Sports ◽  
Biomechanical Behavior ◽  
Custom Made ◽  
Von Mises

Orofacial injuries are common occurrences during contact sports activities; however, there is an absence of data regarding the performance of hybrid occlusal splint mouthguards, especially during compressive loading. To evaluate the total deformation and stress concentration, a skull model was selected and duplicated to receive two different designs of mouthguard devices: one model received a conventional custom-made mouthguard (MG) with 4-mm thickness and the other received a novel hybrid occlusal splint-mouthguard (HMG) with the same thickness. Both models were subdivided into finite elements. The frictionless contacts were used, and a nonlinear analysis was performed simulating the compressive loading in occlusion. The results were presented in von-Mises stress maps (MPa) and Total Deformation (mm). A higher stress concentration in teeth was observed for the model with the conventional MG, while the HMG design displayed a promising mechanical response with lower stress magnitude. The HMG de-sign displayed a higher magnitude of stress on its occlusal portion than the MG design. The hybrid mouthguard (HMG) reduced (1) jaw displacement during chewing and (2) the generated stresses in maxil-lary and mandibular teeth.

scholarly journals Numerical Analysis of the Crack Inspections Using Hybrid Approach for the Application the Circular Cantilever Rods

2021 ◽  
Vol 29 (2) ◽  
Author(s):  
Saddam Hussein Raheemah ◽  
Kareem Idan Fadheel ◽  
Qais Hussein Hassan ◽  
Ashham Mohammed Aned ◽  
Alaa Abdulazeez Turki Al-Taie ◽  
...  
Keyword(s):  
Structural Design ◽  
Hybrid Approach ◽  
Von Mises Stress ◽  
Whole Body ◽  
Total Deformation ◽  
Motion Equations ◽  
Maximum Deformation ◽  
Simulation Process ◽  
Maximum Value ◽  
Von Mises

The present study aims to investigate crack presence in a rigid steel beam so that it can be considered in structural design. A finite element method (FEM) had been used with the Ansys 16.1 software to simulate the whole steel body with three different forces and moments with a magnitude force subjected at the free end of the beam. The steel rod had been considered as simple cantilever to be modelled by the software. Von Mises stress had been considered in the simulation process where the maximum value of stress due to applied load and moment was 1.9 MPa. Total deformation of the whole body had also been considered to instigate the maximum deformation (4.3mm) due to applied loads and moments. Furthermore, MATLAB and through fuzzy logic had been used to assist in the investigation of cracks. Both approaches had been governed by the Euler-Bernoulli theory for free vibration of motion equations. The other aim of this study is to evaluate results received from the Ansys with MATLAB for the same boundary conditions as the case.

scholarly journals Mixing Chamber for Preparation of Nanorefrigerant

2020 ◽  
Vol 21 (1) ◽  
pp. 32-40
Author(s):  
Nur Fazlin Che Halim ◽  
Nor Azwadi Che Sidik
Keyword(s):  
Heat Transfer ◽  
High Pressure ◽  
Structural Analysis ◽  
Yield Strength ◽  
Wall Thickness ◽  
Von Mises Stress ◽  
Chamber Design ◽  
Mixing Chamber ◽  
Von Mises ◽  
Material Mixing

The last decade has seen the rapid advancement of nanofluid in several ways. Nanofluid based on the refrigerant have been introduced as nanorefrigerant in recent years due to their significant effects on the efficiency of heat transfer. Previous studies showed some limitation in ways of dispersing nanoparticles into refrigerant. Hence, a new idea of adding nanoparticles into refrigerant has been presented. A mixing chamber has been designed to mix nanoparticles into high pressure refrigerant. The mixing chamber design is drawn with five different wall thickness which are 2 mm, 4 mm, 6 mm, 8 mm and 10 mm to investigate the sturdiest design that can withstand high pressure. Static structural analysis is performed to all designs with different wall thickness on SolidWorks Simulation. The maximum values of von Misses stress and displacement has been presented in this paper. Validation of the results are made by comparing the maximum values of von Mises stress with yield strength of the material. Mixing chamber with wall thickness of 10 mm showed the best results.

On the usage of the effectively shaped indenter concept for analysis of yield strength

2009 ◽  
Vol 24 (3) ◽  
pp. 1258-1269 ◽  
Author(s):  
M. Herrmann ◽  
F. Richter
Keyword(s):  
Yield Strength ◽  
Elastic Field ◽  
Maximum Load ◽  
Fused Silica ◽  
Fem Simulations ◽  
Fitting Procedure ◽  
Indentation Experiment ◽  
Accuracy Of Measurement ◽  
Von Mises ◽  
Limited Accuracy

Using the extended Hertzian approach (EHA), the “effectively shaped indenter” corresponding to Pharr's concept is described in terms of a parameter set {d0,d2,d4,d6}, which can be determined by a fitting procedure from the unloading curve of an indentation experiment. Owing to the limited accuracy of measurement, a given experimental curve may in principle correspond to more than one such parameter set. Based on indentation experiments with a Berkovich indenter into fused silica, we have investigated the influence of the fitting procedure itself on the results. We suggest a certain manual fitting procedure, which delivered a yield strength Y = (7.1 ± 0.1) GPa independent of the maximum load. Manual fitting always includes some degree of subjectivity, however, both Y and the elastic field as a whole proved to be relatively robust against modifications of the parameter set. We also suggest a preliminary objective procedure, which delivered Y = 6.8 − 7.1 GPa. In addition, we have performed finite element method (FEM) simulations of elastic–plastic indentations of a conical indenter into a von Mises solid with a yield strength of Y = 7.0 GPa. The simulated unloading curve was analyzed using the EHA in the same manner as the experimental curves, and yield strength of 6.95 GPa was obtained being very close to the input value of the FEM.

Modeling and Simulation Research of Banded Wedge and Synchronous V Belt Drive

2013 ◽  
Vol 677 ◽  
pp. 219-224
Author(s):  
Ying Wu ◽  
Xu Zhou
Keyword(s):  
Simulation Analysis ◽  
Equivalent Stress ◽  
Three Dimensional ◽  
Transmission Mechanism ◽  
Von Mises Stress ◽  
Belt Drive ◽  
Total Deformation ◽  
Stress Changes ◽  
Simulation Results ◽  
Von Mises

For cutting down the stress and displacement of banded wedge and synchronous V belt drive in the transmission process, promoting the transmission mechanism, and improving quality of the belt drive, the working principle of the transmission mechanism was introduced briefly. The three dimensional solid model of the transmission mechanism constituted in pro/e; the main parameters of the model were set using ANSYS Workbench. And then the serialization simulation analysis of the transmission mechanism was achieved when the tension force is located in the point of the V belt entering meshing with the driven wheel; the cloud diagram of Von Mises stress and the maximal Von Mises stress and total deformation of the transmission mechanism were elicited. The simulation results were analyzed. The simulation results show that maximal total deformation has a minimum value with increasing the tensioning force. Reducing becomingly the tensioning force in ensuring natural belt drive the maximal Von Mises stress reduces effectively. Augmenting the active force the maximal equivalent stress rarely reduces and the maximal total deformation remains unchanged. Adjusting opportunely the location of the tensioning force the total deformation reduces effectively and the maximum equivalent stress changes smaller.

Design Optimisation and Analysis of a Quadrotor Arm Using Finite Element Method

2014 ◽  
Vol 664 ◽  
pp. 371-375
Author(s):  
Vishank Bhatia ◽  
R. Karthikeyan ◽  
R.K. Ganesh Ram ◽  
Yashaan Nari Cooper
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Design Optimization ◽  
Gravitational Force ◽  
Von Mises Stress ◽  
Structural Elements ◽  
Total Deformation ◽  
Element Analysis ◽  
Von Mises ◽  
Ansys Workbench

The structural analysis of quad rotor frame is important since it has to withstand the forces due to aerodynamics and gravitational force due to the mounted weights. Design optimization based on finite element analysis provides an efficient methodology to meet the desired objectives related to structural elements. In the present study, design optimization based on response surface methodology has been used to optimize the shape of the arm used in the quad rotor. The objectives considered for the study include minimization of Von Mises stress and total deformation. The goal driven optimization used in ANSYS WORKBENCH has been employed for the study and arm has been redesigned to meet the set goals.

An Inverse Approach to the Validation of Pressure Predictions in Rough Elastohydrodynamic Contacts

2001 ◽  
Vol 124 (1) ◽  
pp. 103-108 ◽  
Author(s):  
C. J. Hooke ◽  
K. Y. Li
Keyword(s):  
Residual Stress ◽  
Yield Strength ◽  
Rough Surface ◽  
Experimental Technique ◽  
Von Mises Stress ◽  
Stress Distributions ◽  
Inverse Approach ◽  
Controlled Conditions ◽  
Steel Disc ◽  
Von Mises

A simple experimental technique is developed that allows the pressures and stresses predicted by EHL analyses to be checked. A soft, rough steel disc is run, under controlled conditions, against a harder, smooth counterface. The pressures generated cause the soft disc to plastically deform. Once deformation ceases the residual profile may be measured and used as input to an EHL solver. The calculated pressures are then used to determine the stress distributions as the rough surface passes through the conjunction. After allowing for the build up of residual stress the maximum von Mises’ stress should be equal to the yield strength of the disc. This provides an accurate, quantitative check on the theoretical values.

scholarly journals STRUCTURAL ANALYSIS OF PELTON BUCKET WITH AISI 1020 STEEL AND STRUCTURAL STEEL MATERIAL BY USING SOLID WORKS AND ANSYS

2021 ◽  
Vol 16 (5) ◽  
Author(s):  
Arshad Hussain Jamali
Keyword(s):  
Structural Steel ◽  
Low Flow ◽  
Von Mises Stress ◽  
Total Deformation ◽  
Stress Concentrations ◽  
Impulse Turbine ◽  
Cantilever Structure ◽  
Solid Works ◽  
Von Mises ◽  
The Impact

Pelton Turbine is the hydraulic turbine, type of impulse turbine. An Impulse turbine generally suitable for the low flow rate and high head. The discharge water from the nozzle impacts the bucket of the Pelton wheel to produce the hydropower. There are some reasons behind the failure of the Pelton bucket like as: silt erosion, cavitation, fatigue etc. The main reason behind the fatigue failure is the material property and stress concentrations. A high concentration of stresses occurs at the root of the bucket due to its cantilever structure each time a bucket experiences the impact of the water jet. In this work, there are two materials AISI 1020 Steel and Structural Steel have been considered for analyzing the Pelton bucket. For the 3D CAD model of Pelton bucket Solid works 14.0 and for simulation work ANSYS 15.0 software has been used. In simulation work analysis types were static structural. This paper focuses on von-mises stress, total deformation of von-mises strain to analyze the suitable material for the Pelton bucket. From the obtained results it has been observed that among both materials Structural Steel is suitable for bucket due to low-stress concentration, total deformation and strain.

Comparison of Stresses in Four Modular Total Knee Arthroplasty Prosthesis Designs

2016 ◽  
Vol 5 (2) ◽  
pp. 1-16
Author(s):  
Ahilan Anantha Krishnan ◽  
Rupesh Ghyar ◽  
Bhallamudi Ravi
Keyword(s):  
Yield Strength ◽  
Mechanical Performance ◽  
Three Dimensional ◽  
Compressive Load ◽  
Von Mises Stress ◽  
Dimensional Finite Element ◽  
Tibial Insert ◽  
Modular Prostheses ◽  
Von Mises ◽  
Three Dimensional Finite Element

The current study, compares the mechanical performance of four modular TKA prostheses based on von Mises stress distribution in the tibial insert. Three-dimensional finite element (FE) models of a cruciate retaining type modular prosthesis and three posterior stabilized (PS) type modular prostheses namely: anterior slide, modular post and double cam, were developed. A compressive load of 2600 N was applied to the FE models at flexion angles of 00, 150, 300, 600 and 900. Von Mises stress was evaluated on all the modular parts of the prostheses and compared with the yield strength of the corresponding material. Von Mises stress in all the parts were below the yield strength of their corresponding material except for tibial insert of anterior slide design at high flexion angle. Von Mises stress above the yield strength in the tibial insert of anterior slide design, was due to edge loading in the post and it demonstrates the likelihood of mechanical failure by delamination type of wear.

DESAIN DAN ANALISIS KEKUATAN TANGKI FIRE WATER STORAGE TANK TIPE FIX CONE ROOF KAPASITAS 1500 KL DENGAN PERHITUNGAN AKTUAL DAN SIMULASI SOFTWARE

2021 ◽  
Vol 26 (1) ◽  
pp. 69-78
Author(s):  
Aji Abdillah Kharisma ◽  
Ahmad Fadel Givari ◽  
Irvan Septyan Mulyana
Keyword(s):  
Yield Strength ◽  
Internal Pressure ◽  
Safety Factor ◽  
Storage Tank ◽  
Water Storage ◽  
Von Mises Stress ◽  
Data Input ◽  
Simulation Data ◽  
Water Storage Tank ◽  
Von Mises

Storage tank adalah alat yang dibutuhkan dalam industri minyak bumi dan gas. Fungsi dari storage tank ialah untuk menyimpan fluida dalam jumlah yang besar. Tangki timbun harus memiliki dinding yang kuat untuk menahan suatu tekanan, maka tangki tersebut tidak mengalami kerusakan. Penelitian ini membahas tentang kekuatan desain fire water storage tank, dari kriteria faktor keamanan, von misses, dan displacement. Metode yang digunakan adalah metode perhitungan actual dan metode analysis simulasi (analysis simulation). Data input desain shell diberi internal pressure sebesar (1 atm) atau (0,101325 MPa), pada hasil simulasi solidworks didapatkan nilai dari von mises stress sebesar (150,49 MPa), safety factor (1,36), dan displacement (5,95 mm). Hasil metode perhitungan aktual didapatkan nilai von mises sebesar (155,245 MPa), safety factor (1,32), dan displacement (4,274 mm). Berdasarkan hasil analisa desain dari storage tank dapat dinyatakan aman digunakan dikarenakan nilai von mises berada dibawah nilai yield strength (205 MPa), safety factor berada pada kisaran (1-10), serta displacement yang tidak terlalu signifikan.

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