| Author | Message | ||
     YJ Chun (jini) New member Username: jini Post Number: 2 Registered: 02-2006 |
I'm wondering what is stress equation in 2D for not uniform temperature. I konw that in uniform temperature,stress is Sx=c11*ex+c12*ey+c13*gxy-b*temp Sy=c12*ex+c22*ey+c23*gxy-b*temp Txy=c13*ex+c23*ey+c33*gxy when c11=G, c12=G*nu, c22=G, c33=G*(1-nu)/2 I don't know well b,c11,c12,c13... in not uniform temperature. | ||
| Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 542 Registered: 06-2003 |
The equations you show do not require uniform temperature. "temp" can vary in space and time. The coefficients b, c11, etc, may change with temperature in real materials, but it is customary to treat them as constants. For temperature varying coefficients you must consult an advanced table of material properties. See the example problems in the "Samples | Steady_State | Stress" folder and "Backstrom_Books | Deformation and Vibration | Elasticity | def53.pde". |