Hi, someone told me that i should use the First-Principle-Stress- value für a laminate containing glass, polymers and silicon. The setting is: Glass - Polymer - Silicon - Polymer - Polymer 2-BEAM with a fixed constraint and symmetric constraint at the middle. For brittle materials i know ishould use the FPS but it doesnt lead me to a conclusion of my testing results where the Mises value is more constructive.
My question is: When i change the values from Mises to FPS, there are no stresspeaks close to the restraint anymore. In my real case, i got most defects close to the restraint thats why its kind of confusing to have a value of zero MPa at this point. Usually you have stresses at the restraints.
Well i use to have materials that arent brittle in this case too (polymers) even i like to know the stresses at the silicon.
Thanks for the advice. I know im asking many questions but i really need someone to talk to in these things ;)
With special greetings
My question is: When i change the values from Mises to FPS, there are no stresspeaks close to the restraint anymore. In my real case, i got most defects close to the restraint thats why its kind of confusing to have a value of zero MPa at this point. Usually you have stresses at the restraints.
Well i use to have materials that arent brittle in this case too (polymers) even i like to know the stresses at the silicon.
Thanks for the advice. I know im asking many questions but i really need someone to talk to in these things ;)
With special greetings