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Does a radially expanding cylinder bend?

Submitted by Amit Acharya on
education
research
shell theory

 The Koiter-Sanders-Budiansky bending strain measure and a nonlinear generalization

 We know from strength of materials that non-uniform stretching of fibers along the cross section of a beam produces bending moments. But does this situation necessarily correspond to a 'bending' deformation? For that matter, what do we exactly mean kinematically when we talk about a bending deformation?

Review of a few "Unified" Viscoplasticity Models (Motivated by solder deformation)

Submitted by yoursdhruly on
education
viscoplasticity
Anand
Busso
Krempl
Hart

I had prepared this document for a class project, the level is introductory and the selection of models is motivated by solder deformation, but I hope it is of some help. I have examined four models, proposed by Hart, Anand, Krempl and Busso. The document has 16 pages.

Thanks,

Dhruv

PS: This is a wonderful website!!! 

Derivatives of the invariants of a tensor

Submitted by Biswajit Banerjee on
education
continuum mechanics
derivatives
invariants

When you first start learning finite deformation plasticity, you will run into a plastic flow rate that can be derived from a flow potential such that 

(1)

whereis the Cauchy stress.  For an isotropic material with scalar internal variables, the plastic
flow potential can be assumed to have the form 

A general discussion on the undergraduate course on Strength of Materials

Submitted by Managers on
Forums
Mechanics Courses Forum
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education

Most departments of Mechanical Engineering, Civil Engineering, and Aerospace Engineering have a required course called variably "Strength of Materials", "Introduction to Solid Mechanics", etc.  In most departments, the content of the coure is mainly about static, elastic deformation of rods, shafts, beams and columns.  It might be a good idea to share your thoughts on this course. 

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