Simulate the compression test, Mechanical Engineering

Assignment Help:

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.


Related Discussions:- Simulate the compression test

Show the periodic functions, (a) Show following complex numbers in Rectangu...

(a) Show following complex numbers in Rectangular forms : (i) 5e 0.927j (ii) 10e 4.068j (b) Show the periodic functions by Fourier series (Harmonic series).

Heat distribution in spot welding, Heat distribution in spot welding Be...

Heat distribution in spot welding Besides the resistance at the interface, there are six other resistance through which the same welding current is passed. They are: Res

Finate element method, procedure/equation for welding of two dissimilar mte...

procedure/equation for welding of two dissimilar mterial in finate element method?

Crank pin and crank shaft - part of combustion engine, Crank Pin and Crank ...

Crank Pin and Crank Shaft - Part of combustion engine: Cran k Pin: Crank pin is region on crank shaft on which big end of connecting rod is attached. These pins are eccentr

Working of burner assembly in steam generators, Q. Working of Burner Assemb...

Q. Working of Burner Assembly in steam generators? The Steam Generators shall be equipped with a packaged burner assembly consisting of a burner, combustion air fan, ductwork,

Maintenance of railway line, Maintenance of Railway Line Importance...

Maintenance of Railway Line Importance of Maintenance The need for maintenance of railway lines arises out of the following considerations : (a) The track rests on

Explain about vessel design loads, Q. Explain about Vessel Design Loads? ...

Q. Explain about Vessel Design Loads? Vessels and their supports shall be designed for all of the following conditions: • Erection: dead weight of fully dressed, empty vesse

Common rules concerning corresponding option , COMMON RULES CONCERNING CORR...

COMMON RULES CONCERNING CORRESPONDING OPTION:     Let us consider the DATA DIVISION entries as shown below. Now, let us see which data items will be moved if

Bolt Group Bending Moment, What is the Maximum bolt bending moment in a gro...

What is the Maximum bolt bending moment in a group for four equally spaced bolts?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd