Finite element analysis of low cost lower limb assistive device

2021 ◽  
Author(s):  
Mohd Rizwan Jafar
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Lower Limb ◽  
Low Cost ◽  
Assistive Device ◽  
Element Analysis

Mechanical and Optimization Analyses for Novel Wound Composite Axial Impeller

2009 ◽  
Author(s):  
Jifeng Wang ◽  
Qubo Li ◽  
Norbert Mu¨ller
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Speed ◽  
High Performance ◽  
Low Cost ◽  
Three Dimensional ◽  
Von Mises Stress ◽  
Loading Conditions ◽  
Element Analysis ◽  
Wound Composite

A mechanical and optimal analyses procedure is developed to assess the stresses and deformations of Novel Wound Composite Axial-Impeller under loading conditions particular to centrifuge. This procedure is based on an analytical method and Finite Element Analysis (FEA, commercial software ANSYS) results. A low-cost, light-weight, high-performance, composite turbomachinery impeller from differently designed patterns will be evaluated. Such impellers can economically enable refrigeration plants using water as a refrigerant (R718). To create different complex patterns of impellers, MATLAB is used for creating the geometry of impellers, and CAD software UG is used to build three-dimensional impeller models. Available loading conditions are: radial body force due to high speed rotation about the cylindrical axis and fluid forces on each blade. Two-dimensional plane stress and three-dimensional stress finite element analysis are carried out using ANSYS to validate these analytical mechanical equations. The von Mises stress is investigated, and maximum stress and Tsai-Wu failure criteria are applied for composite material failure, and they generally show good agreement.

scholarly journals A low cost validation method of finite element analysis on a thin walled vertical pressure vessels

2020 ◽  
Vol 1444 ◽  
pp. 012042
Author(s):  
Juan Pratama ◽  
Deni Fajar Fitriyana ◽  
Rusiyanto ◽  
Januar Parlaungan Siregar ◽  
Wahyu Caesarendra
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Low Cost ◽  
Pressure Vessels ◽  
Element Analysis ◽  
Vertical Pressure ◽  
Validation Method ◽  
Thin Walled

Burst Capacity of Reinforced Thermoplastic Pipe (RTP) Under Internal Pressure

2011 ◽  
Author(s):  
Yong Bai ◽  
Fan Xu ◽  
Peng Cheng ◽  
Mohd Fauzi Badaruddin ◽  
Mohd Ashri
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Internal Pressure ◽  
Mathematical Analysis ◽  
Low Cost ◽  
Failure Process ◽  
Shell Element ◽  
Element Analysis ◽  
Burst Strength ◽  
The Finite Element Analysis

Being corrosion resistant, light weight, and easy to install at relatively low cost, Reinforced Thermoplastic Pipe (RTP) is now increasingly being used for offshore operations. RTP pipe in this study is mainly composed of three layers: a wound high strength fiber reinforced layer to improve the resistance of the pipe to internal pressure; a plastic inner layer to transport fluid; a plastic outer layer to protect the pipe. A precise calculation of the burst strength of RTP pipe will be useful for the safe use of RTP pipe’s internal pressure resistance. The Finite Element Analysis (FEA) method and mathematical analysis are employed to study the properties of pipe under internal pressure. The Finite Element Analysis method is used to simulating the pipe under increasing internal pressure using ABAQUS. The model is established with the conventional shell element, and the anisotropic property of plastic is also considered in the model. In the mathematical analysis, the reinforcement layer of the pipe is assumed to be anisotropic and other layers are assumed to be isotropic. Based on the three-dimensional (3D) anisotropic elasticity theory, an exact elastic solution for burst strength of the pipe under internal pressure has been studied. This paper focus on the calculation of RTP pipe’s burst strength, using mathematical approach and FEA approach, on the basis of elaborated study of RTP pipe’s failure process. Our results from mathematical and FE simulation agree each other for burst pressure of the RTP pipe. Our FEA models are also compared with the experimental research in order to validate our FEA models.

Displacement Measurement of Derrick Model Base on the Non-Contact Type Video Measurement Technology

2013 ◽  
Vol 318 ◽  
pp. 125-129
Author(s):  
Xiao Bing Xu ◽  
Xing Han ◽  
Li Yu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Low Cost ◽  
Displacement Measurement ◽  
Measurement Technology ◽  
Element Analysis ◽  
Model Base ◽  
Contact Type ◽  
The Finite Element Analysis ◽  
Measurement Results

In this paper, a non-contact type video measurement technology is introduced, and the displacements of derrick model are measured by this technology. Then comparative analysis between this measurement results and the finite element analysis results showed that the precision of measurement displacement of derrick model used this technology is good. Therefore, this technology is an effective, convenient, safe, low cost, low labor and a new method of derrick displacement measurement.

scholarly journals Fatigue Test of Low-Cost Flexible-Shank Monolimb Trans-Tibial Prosthesis

2006 ◽  
Vol 30 (3) ◽  
pp. 305-315 ◽  
Author(s):  
Winson C. C. Lee ◽  
Ming Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Test ◽  
Structural Integrity ◽  
Static Load ◽  
Fatigue Testing ◽  
Structural Strength ◽  
Low Cost ◽  
Element Analysis ◽  
Thermoplastic Material

Monolimb refers to a kind of trans-tibial prostheses with the socket and shank moulded into one piece of thermoplastic material. If properly designed, the shank of a monolimb can deflect which may compensate for the lost ankle plantarflexion and dorsiflexion to some extent. However, provision of shank flexibility is usually accompanied by reduced structural strength of the entire prosthesis. In the recent work using finite element analysis and the Taguchi method, the dimensions of the shank for the monolimb were derived which aimed at giving high shank flexibility and reasonable strength to resist static load. Yet, fatigue testing has not been performed. Fatigue failure may happen when a relatively low level of load is applied repeatedly. This study aimed to document the fatigue life of two flexible-shank monolimbs, by applying cyclic force of 800 N at the forefoot region for 500,000 cycles. Results showed that the design of the foot bolt adaptor played an important role in the structural integrity of the monolimb. One monolimb completed the fatigue test of 500,000 cycles without visual material yield, but with 3.8° change in dorsiflexion angle when the load was removed.

Experimental Verification and Finite Element Analysis of Automotive Door Hinge

2014 ◽  
Author(s):  
S. Doğan ◽  
C. Guven ◽  
F. Karpat ◽  
T. G. Yilmaz ◽  
O. Dogan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Automotive Industry ◽  
Low Cost ◽  
Dynamic Test ◽  
Test Results ◽  
Customer Requirements ◽  
Element Analysis ◽  
Door Hinge ◽  
Fixed Part

In automotive industry, achieving lightweight, low-cost, reliable and more accurate product design are the most important goal. Using Finite Element Analysis (FEA) is an important tool for achieving this since it decreases prototyping cost and time. Cars have different door system and one of the important part of them is door hinge. An automotive door hinge is mainly composed of three elements, fixed part, mobile part and hinge pin that fasten fixed part and mobile parts. Manufacturers have to perform tests and analysis for ensuring international and customer requirements. In this study, FEA results are compared with static and dynamic test results of front door hinge of automotive according to International specifications. The agreement between the computed and measured values is shown.

Sign in / Sign up

Export Citation Format

Share Document