Has anyone come across this FE mesh convergence approach which is based on the ratio of the un-averaged min/maximum principal stress ratios at the element corner nodes or at integration points?
thread727-253537
thread727-253537
I know in this forum the issue of Von Mises stress has been discussed time and time again,(e.g http://www.eng-tips.com/viewthread.cfm?qid=253537) however having gone through most of the threads, I am still left wondering about the validity of Von Mises stress...
What is rationale behind holding structures under Ultimate load test for 3 seconds accroding to FAR 25 or EASA CS25 Aircraft certification requirements? In terms of structural failures, what is the 3 seconds no failure at ultimate load testing requirement meant to demonstrate? I have asked this...
Hi all and the experts in house,
I have two questions regarding FE Fatigue;
In order to do fatigue analysis in most Axial FE Fatigue codes, various Unit load cases are often created based on 'Linear' FEA assumptions - (usually linear material model based on monotonic material Stress-Strain...
Hello all,
How do you determine your reserve factor from a non-linear FEA (material)? Generally, most non-linear FEA I have come across tend to use a non-linear material true stress-strain curve for non-linear FEA (material). And there after extract the Maximum Strains, derive the 'equivalent...
