Thermal stresses

Xi Liu's picture

Warpage prediction of laminated composite materials

Can anybody recommend some papers/books that discuss how to caculate thermal induced warpage of lamianted composite materials? Paper/books with detial caculation/derivation process are preferred. Thanks a lot!


Arash_Yavari's picture

A Geometric Theory of Thermal Stresses

In this paper we formulate a geometric theory of thermal stresses.
Given a temperature distribution, we associate a Riemannian
material manifold to the body, with a metric that explicitly
depends on the temperature distribution. A change of temperature
corresponds to a change of the material metric. In this sense, a
temperature change is a concrete example of the so-called
referential evolutions. We also make a concrete connection between
our geometric point of view and the multiplicative decomposition
of deformation gradient into thermal and elastic parts. We study
the stress-free temperature distributions of the
finite-deformation theory using curvature tensor of the material


Thermal Stress Analysis

Hi Everyone,

 I am new to Abaqus. I am working on a research topic where in I need to study the transient thermal stresses, strains arised due to heating a body by thermal radiation.  From the user's manual I understood that I need to use "Sequentially coupled thermal-stress analysis" for my model.

 I want the sample surface to be heated at a specific rate (say 20 C/min). I am not able to figure out how to set this condition when using "surface radiation" heat transfer or may be at what rate should I change my ambient temperature for the body surface to get heated at the specific rate.

 Can anyone please help me in this regard? 

 

Thanks in advance.


Stresses in Elastic Materials in Non-uniform Cooling

Hi,

 

I am having confusions about the concepts of thermal stresses of an un-constrained elastic body when heated/cooled.

Let's say if I have an elastic body of an arbitrary geometry. If I subject it to a uniform temperature change without any constraints, then there will no thermal stresses at the end of the analysis. I guess I am right till here.


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