scholarly journals ANALISIS TEGANGAN ALAT UJI BENDING PIPA SKALA LABORATORIUM MENGGUNAKAN FINITE ELEMENT ANALYSIS

2021 ◽  
Vol 3 (1) ◽  
pp. 201-205
Author(s):  
Angga Bahri Pratama ◽  
Islahuddin Islahuddin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Yield Strength ◽  
Static Displacement ◽  
Element Analysis

Proses pengerolan yang banyak digunakan di industri skala kecil seperti bengkel, workshop dan lain-lain masih dilakukan secara manual. Pembuatan mesin bending pipa dengan proses ini memerlukan perencanaan yang tepat dengan cara mengetahui terlebih dahulu tegangan yang bekerja pada pipa agar tidak melebihi tegangan maksimumnya. Tegangan maksimum dalam perencanaan dan pembuatan mesin merupakan suatu dasar yang sangat penting untuk diketahui. Tujuan penelitian ini adalah untuk mendapatkan hasil simulasi tegangan yang terjadi pada alat bending pipa skala laboratorium yang mengalami pembebanan menggunakan perangkat lunak Solidworks 2020. Proses simulasi dilakukan dengan variasi pembebanan 700 N, 500 N dan 100 N. Proses Simulasi dilakukan dengan beberapa langkah pengerjaan, yaitu menginputkan data material baik material roller maupun material pipa yang akan dilakukan pengerolan. Data material yang diinputkan dapat berupa modulus elastisitas, poissons’ratio, yield strength dan lain-lain. Langkah selanjutnya diinputkan pemodelan roller bending dengan solidworks, setelah itu dilakukan simulasi metode elemen hingga (finite element analysis) menggunakan software Solidworks 2020. Selanjutnya dari proses simulasi telah dilakukan diperoleh tegangan bending maksimum sebesar 265,1 MPa, sedangkan static displacement maksimum sebesar 2,161 e1 mm.

scholarly journals Biomechanics of subtrochanteric fracture fixation using short cephalomedullary nails: A finite element analysis

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0253862
Author(s):  
Dae-Kyung Kwak ◽  
Sun-Hee Bang ◽  
Won-Hyeon Kim ◽  
Sung-Jae Lee ◽  
Seunghun Lee ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Yield Strength ◽  
Cortical Bone ◽  
Osteoporotic Bone ◽  
Element Analysis ◽  
Distal Locking ◽  
Normal Bone ◽  
Locking Screws ◽  
Cephalomedullary Nails

A finite element analysis was performed to evaluate the stresses around nails and cortical bones in subtrochanteric (ST) fracture models fixed using short cephalomedullary nails (CMNs). A total 96 finite element models (FEMs) were simulated on a transverse ST fracture at eight levels with three different fracture gaps and two different distal locking screw configurations in both normal and osteoporotic bone. All FEMs were fixed using CMNs 200 mm in length. Two distal locking screws showed a wider safe range than 1 distal screw in both normal and osteoporotic bone at fracture gaps ≤ 3 mm. In normal bone FEMs fixed even with two distal locking screws, peak von Mises stresses (PVMSs) in cortical bone and nail constructs reached or exceeded 90% of the yield strength at fracture levels 50 mm and 0 and 50 mm, respectively, at all fracture gaps. In osteoporotic bone FEMs, PVMSs in cortical bone and nail constructs reached or exceeded 90% of the yield strength at fracture levels 50 mm and 0 and 50 mm, respectively, at a 1-mm fracture gap. However, at fracture gaps ≥ 2 mm, PVMSs in cortical bone reached or exceeded 90% of the yield strength at fracture levels ≥ 35 mm. PVMSs in nail showed the same results as 1-mm fracture gaps. PVMSs increased and safe range reduced, as the fracture gap increased. Short CMNs (200 mm in length) with two distal screws may be considered suitable for the fixation of ST transverse fractures at fracture levels 10 to 40 mm below the lesser trochanter in normal bone and 10 to 30 mm in osteoporotic bone, respectively, under the assumptions of anatomical reduction at fracture gap ≤ 3 mm. However, the fracture gap should be shortened to the minimum to reduce the risk of refracture and fixation failure, especially in osteoporotic fractures.

scholarly journals FINITE ELEMENT ANALYSIS OF GO-KART CHASSIS

2019 ◽  
Vol 7 (SI-TeMIC18) ◽  
Author(s):  
Mohamad Azri Haziq Mohd Jafri Mohd Jafri ◽  
Shahrul Hisyam Marwan ◽  
Muhammad Khairudin Mohd Lazim ◽  
Nurul Damia Mohd Anuar
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Yield Strength ◽  
Static Analysis ◽  
Maximum Stress ◽  
Maximum Yield ◽  
Element Analysis ◽  
Maximum Yield Strength

This paper aims to model, simulate and perform the static analysis of a go-kart chassis consisting of circular beams. Modelling, simulations and analysis are performed using modelling software i.e. SolidWorks for Go Kart Challenges 2017 (GKC-17). The maximum stress and displacement is determined by performing static analysis. The result of maximum stress is compared to maximum yield strength of maximum stress whether the maximum stress is exceeding the maximum yield strength or not. It can also show the displacement where it shows the deformation of the chassis part when the load applied to the chassis. Keywords: chassis; Go kart; FEA; SolidWorks

Yield Inception of a Coated Substrate Indented by a Rigid Sphere

2011 ◽  
Author(s):  
Wenping Song ◽  
Longqiu Li ◽  
Andrey Ovcharenko ◽  
Ding Jia ◽  
Guangyu Zhang ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Yield Strength ◽  
Film Thickness ◽  
Young’S Modulus ◽  
Material Properties ◽  
Rigid Sphere ◽  
Element Analysis ◽  
Strong Function ◽  
Coated Substrate

Yield inception of a coated substrate indented by a rigid sphere is analyzed using finite element analysis. The critical interference is studied as a function of film thickness and material properties of both the film and the substrate. The results show that critical interference, corresponding to yield inception of the coated substrate, is a strong function of the film thickness, the Young’s modulus, and the yield strength of both the film and the substrate.

scholarly journals Pengembangan Konsep Desain dan Fabrikasi Mesin Penyortir Buah Duku (Lansium Parasiticum)

2020 ◽  
Vol 4 (2) ◽  
pp. 91-102
Author(s):  
Satriawan Dini Hariyanto ◽  
Rela Adi Himarosa ◽  
Andreas Brian Aditya ◽  
Sandy Hidayat ◽  
Eko Sulistyo Wibowo ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Yield Strength ◽  
Safety Factor ◽  
Step Method ◽  
Element Analysis ◽  
Strength Material

Pengembangan konsep desain mesin penyortir buah duku (Lansium Parasiticum) dilakukan menggunakan metode Five Step Method. Diperoleh tiga konsep mesin yang kemudian dipilih satu dari tiga konsep terbaik menggunakan metode product champion dilanjutkan dengan pembuatan desain 3D dan Finite Element Analysis (FEA) menggunakan software autodesk inventor 2017. Analisis FEA menunjukkan nilai von Misses stress sebesar 18 MPa bernilai lebih kecil dibanding yield strength material penyusun rangka sebesar 207 MPa, displacement yang terjadi sebesar 0,99 mm dengan nilai safety factor 15. Fabrikasi dan pengujian mesin menunjukkan nilai persentase keberhasilan proses penyortiran pada mesin lebih dari 85% dengan kapasitas sortir 400 kg/jam.

scholarly journals Investigations of Mechanical Properties of API P110 Steel Casing Tubes Operated in Deep-Sea Sour Condensate Well Conditions

2020 ◽  
Vol 27 (3) ◽  
pp. 121-129
Author(s):  
Yao Zilin ◽  
Wang Yu ◽  
Yang Xuefeng ◽  
Gao Anping ◽  
Zhang Rong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Tensile Strength ◽  
Yield Strength ◽  
Deep Sea ◽  
Performance Model ◽  
Continuous Change ◽  
Element Analysis ◽  
Equivalent Yield

AbstractDue to the complexity of the marine environment, in deep-sea drilling, all kinds of strings are corroded by different deep-sea conditions for a long time, accompanied by high temperature and high pressure, which lead to the continuous change of mechanical properties of materials. In order to solve the problem that the material mechanical parameters cannot be accurately described in the performance analysis of the casing, deep-sea simulated corrosion and material damage experiments of P110 material were carried out in this paper. Mass loss and tensile experiments on corrosion-damaged test pieces were conducted under different corrosion experimental periods. The changes in mechanical properties of the material were analyzed. Equations of the variation of the equivalent yield strength and the equivalent tensile strength were obtained. The results show that the equivalent yield strength and the equivalent tensile strength decrease with the increase of the weight loss rate. Based on the experimental results and finite element analysis, a method for establishing the material corrosion model was proposed in this paper. The deep-sea drilling corrosion performance model of P110 material was established, which greatly reduced the error caused by the material uniformity assumption in finite element analysis. This paper provides a theoretical basis for the analysis of reliability and life of P110 materials in wells.

Relationship between scratch hardness and yield strength of elastic perfectly plastic materials using finite element analysis

2008 ◽  
Vol 23 (8) ◽  
pp. 2229-2237 ◽  
Author(s):  
Ki Myung Lee ◽  
Chang-Dong Yeo ◽  
Andreas A. Polycarpou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Yield Strength ◽  
Experimental Studies ◽  
Analytical Prediction ◽  
Element Analysis ◽  
Scratch Hardness ◽  
Perfectly Plastic ◽  
Solid Film ◽  
Hardness Model

With thin solid film usage expanding in numerous technologies, reliable measurements of material properties such as yield strength become important. However, for thin solid films the measurement of yield strength is not readily available, and an alternative method to obtain this property is to measure hardness and convert it to yield strength. Tabor suggested dividing hardness by ∼3 to obtain yield strength, which has been used extensively, despite its shortcomings. Since the pioneering work of Tabor, researchers have performed numerical and experimental studies to investigate the relationships between hardness, yield strength, and elastic modulus, using the indentation technique. In this study, finite element analysis was performed to simulate the nanoscratch technique. Specifically, the nanoscratch finite element analysis was used to validate a previously developed analytical scratch hardness model. A full-factorial design-of-experiments was performed to determine the significant variables for the ratio of calculated scratch hardness to yield strength and a simple analytical prediction model for the ratio of hardness to yield strength was proposed.

scholarly journals Further analysis of indentation loading curves: Effects of tip rounding on mechanical property measurements

1998 ◽  
Vol 13 (4) ◽  
pp. 1059-1064 ◽  
Author(s):  
Yang-Tse Cheng ◽  
Che-Min Cheng
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Yield Strength ◽  
Element Analysis ◽  
Perfectly Plastic ◽  
Elastic Perfectly Plastic ◽  
Conical Indentation

The effects of indenter tip rounding on the shape of indentation loading curves have been analyzed using dimensional and finite element analysis for conical indentation in elastic-perfectly plastic solids. A method for obtaining mechanical properties from indentation loading curves is then proposed. The validity of this method is examined using finite element analysis. Finally, the method is used to determine the yield strength of several materials for which the indentation loading curves are available in the literature.

CTOD Fracture Toughness Tests and Numerical Simulation for Welded Joints of Q370qE

2009 ◽  
Author(s):  
Qiming Yu ◽  
Weiguo Wu ◽  
Jin Gan
Keyword(s):  
Fracture Toughness ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Brittle Fracture ◽  
Yield Strength ◽  
Ocean Engineering ◽  
Plastic Part ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Base Steel

In this investigation, Based on BS7448 fracture toughness test experiment standard and DNV-OS-C401, three-point crack tip open displacement (CTOD) bending tests were made using Q370qE base steel, weld seam and heat-affected zone (HAZ) samples at different sample thicknesses and at different temperature to study the elasto-plastic fracture toughness of the materials frequently used in ocean engineering structure, and the results were calculated using the p-V curves. The results show that different CTOD values corresponding to the occurrence of brittle fracture before yield strength, brittle fracture after yield strength, and ductile fracture are related to different material types, thicknesses, temperature; and the CTOD value is made up of elastic part and plastic part, the value of plastic part greatly influence the CTOD value. Finally, using ANSYS commercial software, bending test models all of base steel, welded joint, HAZ with various center through crack sizes were computed by three-dimensional finite element method, from the results of the finite element analysis, the simulated p-V curve was obtained. It could be found that the simulated curve was close with the experimental curves, so the finite element analysis was accurate. And these works also have important project practical value to the ocean engineering structure designer.

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