research
Look for some references about damage mechanics!
1、Chaboche J L. Une loi diferentielle d’ endommagement de fatigue avec cumulation non linearire.Revue Francaise de Mecanique,1974, 50-51
2、Lemaitre J, Plumtree A. Application of damage concepts to predict creep-fatigue failures. Journal of engineering materials and technology. Transactions of ASME. 1979,101:284-292
3、Wang J. Low cycle fatigue and cycle dependent creep with continuum mechanics. International Journal of damage mechanics. 1992a,1(2):237-244
Thermoelastic Instability Analysis
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Hi, I am new to iMechanica. I am also not sure whether this post is appropriate here or not.
Modal analysis of a Gas turbine matrix burner using ANSYS
Hi, dear friends,
I am new to i-mechanica and working for a reaserch institute for steam and Gas turbine in Aachen,Germany. I am doing Modal analysis of a Gas turbine matrix burner and want to find out the diffrent mode shapes and the frequency. My problem is, I want to impose a temperature field of round about 1800°C which I will extract from CFD results. SO I would be grateful if any one can tell me how can I impose temperature field to get this modes and frequency because this things are influenced by temperature.
Have a nice day
Kidus
Hi,
I am uisng ABAQUS 6.7/Standard to simulate gear pairs (only static). At a moment I am only taking 2D, so I am using plane strain with quad elements. My problem is how to chnage the mesh refinment with respect to the gears postion, specially on the contact area?
Thank you in advance for any help
Does the J-integral method for energy release rate require a small displacement assumption?
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As I understand it, there are many geometries for which the j-integral has been found to give useful simplifications when evaluating the energy release rate. Many of these geometries seem to require small displacements. I would like to know if the small displacement requirement is necessary for the contour integral before any simplifications are made or if small displacements are only necessary because the large deformation geometry of some specimens conflicts with those simplifications.
Second law of thermodynamics and Configurational Mechanics
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Hello,
I have been reading up a lot on "Configurational Mechanics" and frankly i came up with a lot of questions. I am not skeptical at all about it, it just that many things are not clear to me.
Effect of Residual stresses on the Interfacial Fracture Toughness of polymer/Metal Interface
When a bi-material sample for the characterization of interfacial fracture toughness is manufactured, the sample is not usually stress-free at room temperature. If an interface between a metallic substrate and a polymeric adhesive is considered, there are essentially two sources of residual stresses for a dry sample at room temperature:
1- The mismatch between the Coefficient of Thermal Expansion (CTE) of adhesive and substrate induces a concave or convex warpage, depending on the CTE values of the two materials.