pedrodmar
Aerospace
- Feb 4, 2010
- 7
Hi everybody,
I´m performing a thermoelastic check to a FEM with Patran/Nastran, that is formed just by shells, beams and MPCs. I have followed the rules to perform the analysis as are; same CTE, poisson´s coef. and Elastic modulus, as well as RBE2 with 0 length and no offsets, the structure is isostatically constrained as well.
The problem is that I have been asked for a stress lower than 100 Pa and I get 8Mpa, the stress spots are located in all the corners of the structure.
I don´t know what is going on, can anyone help me?
Thankyou very much in advance.
Pedro.
I´m performing a thermoelastic check to a FEM with Patran/Nastran, that is formed just by shells, beams and MPCs. I have followed the rules to perform the analysis as are; same CTE, poisson´s coef. and Elastic modulus, as well as RBE2 with 0 length and no offsets, the structure is isostatically constrained as well.
The problem is that I have been asked for a stress lower than 100 Pa and I get 8Mpa, the stress spots are located in all the corners of the structure.
I don´t know what is going on, can anyone help me?
Thankyou very much in advance.
Pedro.
