# Finite element analysis of compression test.

Finite element analysis of compression test.

Simulation: Simulate compression test of a steel specimen with the material properties, dimensions
dimensions and test parameters given below. Attention on the unit system used!
Material properties: Modulus of elasticity: 210 GPa
Poisson’s ratio: 0.3
Flow curve: 260 + 20 (e p)0.1 MPa according to Ludwik’s expression
where s Y,0 is the initial yield stress, K and p are
the hardening exponents, and e p is the equivalent plastic strain.
Dimensions: Gauge length: 50 mm
Width: 20 mm
Thickness: 2 mm
Structural Analysis – RESIT COURSEWORK
(14MMP130)
YOU ARE REQUIRED TO COMPLETE ALL QUESTIONS
PLEASE PROVIDE FULL WORKED SOLUTIONS TO ALL QUESTIONS
Deadline for receipt of coursework is Friday 21st August 2015
( )n
f K p
Y,0 s =s + e
Clamp (actuator)
Clamp (stationary)
Sp
eci
me
n
v
Page 2 of 2
Test parameters: Bottom clamp is stationary. Velocity of the top clamp is v = 1 mm/s. Compressive displacement of the top clamp is 5 mm.
1) Give the figures of von Mises stress distributions at 1 % and 40 % compression (of 5 mm), and briefly discuss the differences observed [20 marks]
2) Plot and analyse the force-displacement curve for the top clamp [25 marks]
3) Briefly describe the effect of velocity of the clamp (v) on the simulation results [10 marks]
4) Briefly discuss the effects of mesh (element) size on the simulation results (force-displacement curve, von Mises stress distribution, convergence, etc.) (You might build your model with various element sizes!) [20 marks]
5) Briefly explain the difference between 2D and 3D modelling (You might build 2D and 3D models with identical simulation parameters) [25 marks]
Do not forget to include simulation models and result files (CD, DVD, etc.) in your coursework submission!
Hand in: 21 August 2015 Return: 12 September 2015

275 words
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