concrete prism under compression
concrete prism under compression
(OP)
I am trying to simulate a concrete prism under compression. It's a 1" by 1" by 1" which is to be loaded axially. The concrete has a typical nonlinear stress-strain behavior i.e. an almost parabolic ascending portion and a linear descending branch (please see the attachment). I assume that since the prism is under pure compression, its load-contraction curve must be essentially the same as the concrete stress-strain curve and I wanted to examine this hypothesis.
To define the concrete stress-strain data, I used Inelastic>Rate Independent>Isotropic Hardening Plasticity>Mises Plasticity>Multilinear.
I also introduced the Elastic E and Poisson ratio accordingly.
It should be a simple problem, but surprisingly I get very weird results. For example, I can apply contractions as much as 1" to the cube!
Am I missing something? How would you simulate this problem?
Thanks
To define the concrete stress-strain data, I used Inelastic>Rate Independent>Isotropic Hardening Plasticity>Mises Plasticity>Multilinear.
I also introduced the Elastic E and Poisson ratio accordingly.
It should be a simple problem, but surprisingly I get very weird results. For example, I can apply contractions as much as 1" to the cube!
Am I missing something? How would you simulate this problem?
Thanks





RE: concrete prism under compression
RE: concrete prism under compression
also second part of your stress-strain curve is descending which makes the analysis impossible to converge. you have to use true stress-strain curve in stead of engineering one.
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RE: concrete prism under compression