Skip to main content

education

Significance of J1 and J2

Submitted by Ashar Sultan on
Choose a channel featured in the header of iMechanica

Dear members,

I need some information about the implication or significance of J1 and J2 in granular materials not mathematical represantation which I have.Your feedback will be highly appreciated.Thanks in advance.

 

P = Mean stress or Hydrostatic stress = (σ11 + σ22+ σ33)/3

 

J1 = -3 * p

GRE Verbal, how much does it count?

Submitted by Temesgen Markos on

I am in the process of applying for a PhD in computational solid mechanics in the US and I am about to take the GRE. Well I have been kind of busy at my work and didn't really get time to study the word list.

My question is, how much weight does the verbal part have in admission/fellowship/assistantship decisions? If I have really good GPA's and research experience with enthusiastic refrees, can I still make it with medicore results on the verbal part?

Complex analysis on Wikipedia

Submitted by Zhigang Suo on

I'm teaching Applied Mathematics 105a this semester.  The main content of the course is complex analysis.  The course is taken mainly by undergraduate students in Engineering, Physics, and Applied Mathematics.  There are about 70 people in the class, which makes it the largest class I have taught in the last 10 years. I have never taught a course on complex analysis before, but have used complex analysis in my research, and have taught the method of complex variables in my graduate course on elasticity.

Plasticity

Submitted by Ray_Lau on
Choose a channel featured in the header of iMechanica
Free Tags

Dear all,

Do you have any reference about the theory of plasticity? Especially about flow theory and von Mises yield criterion?

For example if I have an effective stress - plastic strain relationship, and I after yielding, I increase my strain again, how can I obtain the increment of the plastic strain and the stress deviator tensor?

Thanks a lot.

Best,

Ray