Simulate the compression test, Mechanical Engineering

This assignment will simulate large deformations (nonlinear geometry) and occurrence of necking and buckling due to static tensile and compressive loading of a given elastic-plastic ductile metallic material.

The aim of this assignment is the investigation of computationally effective solution methods to simulate unstable large deformations.

Assume the material to be aluminium. The characteristic curve in the plastic range can be fitted to a material law given by

419_Simulate the compression test.png, where E= 70GPa, s0=200 MPa, B=3.0 GPa and H=4.0

Assume Poisson's ratio to be n=0.25.

1) Simulate the tension test for the following specimen geometry:

  • The specimen has a 0.1*# mm width and thickness (solid square) cross-section with 0.4*# mm length

2) Simulate the compression test for the following specimen geometry:

  • The specimen is a slender plate, 0.6*# mm height, 0.2*# mm width and 0.02*# mm thickness
  • Include different imperfections (maximum out-of-plane centre imperfection is 50%, 100% and 200% of thickness) into your model for the nonlinear analysis.

For both models, # = 100 + the last two digits of your student number (e.g. for s123456 -> # = 156).

Introduce the given material properties into your models as discussed in lecture 3 on plasticity (you might want to use software such as Excel to generate the data). Apply appropriate boundary conditions for each loading case. Analyse results to reproduce the characteristic curve of the material as usual in analysing the results of experimental tests. This means that you need to produce force-displacement diagrams for each test (in-plane and out-of-plane when appropriate). Using constraints for the applied boundary conditions on the top plate are very useful in this case!

Simulate elongating both specimens statically by 25%.

Assume all models to be welded to rigid blocks at both ends. Due to these boundary conditions (fixed-fixed), determine why imperfections are required to introduce buckling in the nonlinear model, but necking occurs without imperfection. Determine the differences in the buckling response with different levels of imperfection.

Posted Date: 2/28/2013 5:48:22 AM | Location : United States







Related Discussions:- Simulate the compression test, Assignment Help, Ask Question on Simulate the compression test, Get Answer, Expert's Help, Simulate the compression test Discussions

Write discussion on Simulate the compression test
Your posts are moderated
Related Questions
What are the limitations with rectangular combined footings? In this section the analysis is limited to the determination of plan dimensions of the footing. The physical dimens


scale and sludge formation

Q. How can you implement Permeability test  As already defined, permeability of porosity of the moulding sand is the message of its ability to permit air to flow through it.

Q. What are the basic use of Sand rammer? It is the apparatus of make specimens of moulding sand, for tests such as - permeable test, the various strength tests, and shatter te

You are required, as part of a small team, to design a remote controlled buggy that can be made to move forwards, backwards and from side to side. The basic buggy and motors are pr

Carbon nanotubes (CNTs) with low weight (density = 1.3 g/ cm^3), high tensile strength (50 GPa), and modulus of elasticity (1 TPa) in the axial direction have been touted as the st

INVERTER TYPE POWER SOURCES For site welding and repair applications, a need was felt for long time to have light weight arc welding power source. Even though, a petrol driven ro

Evaluation Phase of Radial drilling machine Steps: 1. To judge the ideas generated in the creation phase for ability to meet the required criteria. 2. To refine, develop

Restricted Search over All Possible Scheduling All options to this approach aim to calculate a schedule for a specific number of operations and after that to schedule the initi