Dear all,
Sry for posting this topic again. However, i've meet problems when simulating powder compaction. The following parameters is what i have i used
Elastic : Young modulus 40
Poisson Ratio 0.35
Plasitc : Drucker Prager angle of friction 33
here is a simple question
I have modeled the reduced section of a tensile test specimen in 3D (a simple cylinder; falt surface in x-y plane, length in z direction). I applied a load on one flat surface of the cylinder, and put the opposite flat surface as a symmetry plane.
When I plot the result after the simulation of a tensile test, the cylinder moved in the direction perpendicular to the application of the load. I was expecting it only to increase in length in the z direction.
I used for the first time the CINT command with ansys, and I get strange results:
negative values
very different values for 2 adjacent nodes on the crack front
non converging values (values fluctuating from 1 contour to another, going up and down)
Also, i don't know what are the units of the J integral (I am using SI units, dimensions in mm ). It's important to know so I can calculate the SIF
How can I know what contour gives the best result? what are the units of the Jintegral in the SI.
Anybody have some information for me?
I was going through these papers:
1.P.K. Sarkar and S.K. Maiti, 'Prediction of mode-1 fracture toughness of unidirectional fibre composites with arbitrary crack fibre orientation from its lowest or matrix fracture toughness'. int. J. Fracture, vol. 40. pp. R91-R96, (1989).
2.S.K. Maiti and P.K. Sarkar, 'A method of calculation of total strain energy release rate and its layer-wise distribution for an arbitrary through the thickness crack extension in a composite laminate', Engg. Fracture Mechanics, vol. 36, pp. 639-646,(1990).
i am using Deform 3D for my analysis but wats the problem in this software i cant input the material properties,flow stress of the material so the validation with theoritical becomes difficult so if anybody doe know about this how to input the matl pproperties and force of the press please help me
1 Postdoc and 1 PhD student positions are available in the Department of Mechanical Engineering (MEK), Technical University of Denmark (DTU).
Dear all,
I want to do a run- up analysis for a rotor in ansys. The rotational speed change from 0 to 5000 rpm
In ansys help is explained:
nlgeom,on !! so that the gyroscopic matrix is updated
But because my model has Combin214 element, the nlgeom make error and solve dont run.
when I remove combin214, I dont get error.
I changed combin214 with matrix 27 but same problem.
In an example in ansys is used combin14. but my model is 2-D axisymmetric analysis and I think combin14 in not good element for modeling bearings.
Dear All,
I am new to ABAQUS and trying to simulate my microdamper for fundamental mode frequency. In simulation (Version 6.9), I am trying to set silicone oil properties. This microdamper has three layers viz. Aluminum, Polydimethyl siloxane (PDMS) and Aluminum. I have carved microchannels in PDMS and filled silicone oil to these microchannels.
Silicone oil properties are:
Shear modulus = 1.43e9 Pa
Bulk modulus = 1.0349e9 Pa
Density = 760 Kg/m3
I am currently having difficulty modelling fatigue analysis on a wheelchair frame with hollow circular sections (pipe 16). When assigning the stress locations it says that the stress is not available for that node.
Any help would be appreciated!