education
Need Help for Abaqus/CAE ( best method for fatigue test for tensile test for a number of cycle)
Submitted by reddy8929 on Sun, 2013-05-19 16:02.Dear friends, i current doing a project work on testing fatigue life of superelastic nitinol. And since i am very new in using abaqus for testing the simulation, i seeking help from people around here to ask for method to test the work. My objective is to set a maximum elongation for 1%-6% of elongation and test for 40,000 cycle if it can work for this amount of cycle..
i Hope anyone can help me as i need to finish this project in order to graduate and i didnt get any single help from regarding this software from my side..
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XFEM Damage Evolution fracture parameters
Submitted by lans511 on Sat, 2013-05-18 21:14.I am trying to model and centre crack inclined at 45 deg angle under uniaxial compression under mixed mode I and II. I am using Abaqus 6.12SE but I'm stuck with Damage Evolution parametres: I chose Damage for Traction Separation Laws, Maxps; Damage Evolution Type = Energy; Mixed bode behaviour = Power Law with power value 1; Now at the bottom what should be the input values of Normal Mode Fracture Energy, Shear Mode Fracture Energy 1st direction and Shear Mode Fracture Energy 2nd Direction. I need help asap. Thanks all.
NL springs query
Submitted by TheMig29 on Thu, 2013-05-16 14:08.Hello guys,
I am working on a project wherein there is a rubber material which gets compressed. Now I have the force-displacement curve for this rubber material. I intend to represent the rubber with NL springs.
The F-d curve mentiones the specimen details as 5*100mm. This i beleive is the tested specimen. Now how can I consider this for the whole rubber model???
I have n number of springs connected in parallel. How can I consider this when I use a F-d curve?
Any help is appreciated.
Thanks.
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Biographical Memoir of Zay Jeffries by W.D. Nix
Submitted by William D. Nix on Tue, 2013-05-14 04:33.I have written a National Academy of Sciences biographical memoir of Zay Jeffries, one of the great American metallurgists of the 20th century. I am posting the link to the NAS website here with the thought that some readers of iMechanica might be interested in the piece. Some will be interested to learn that Jeffries came very close to discovering dislocations some 18 years before the great papers of Taylor, Orowan and Polyanyi in 1934.
http://www.nasonline.org/publications/biographical-memoirs/memoir-pdfs/j...
W.D. Nix
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Important Questions on Applied Thermodynamics EME-401
Submitted by jeetender singh... on Fri, 2013-04-26 12:21.Important Questions on
Applied Thermodynamics EME-401 for GBTU
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Analysis Type-Ultrasonic Wave
Submitted by mhdiab on Fri, 2013-04-26 00:20.Hey all,
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Post- buckling analysis using ANSYS software
Submitted by Ajisha.R on Thu, 2013-04-25 13:29.How can post buckling analysis be carried out in ANSYS, when element Shell181 is used? what are the various methods and the procedure how to carry out the analysis ???
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buoyancy
Submitted by urkabil on Tue, 2013-04-23 09:56.Can i say, the center of buoyancy and the center of gravity of the immersed part are same?
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Johsnon-cook model parameter determination
Submitted by psarunirtt on Tue, 2013-04-23 06:45.Hello All!!!
I am Arun, Master degree student in South Korea.
My research field is : High strain rate experiemnts
I did High speed tensile test for aluminium alloy at four different speeds (1m/s, 5m/s, 10m/s and 15m/s)
I also did high temp tensile test for aluminium alloy at room temperature, 100 C, 250C
Now i have the stress Vs Strain curve for High speed tensile test and high temperature test
But, i don't know how to determine Johnson-Cook model parameter from the experimental results
I read many reference, but it's confusing
Can some one guide me to determine the parameters
Thanks and regards,
Arun
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FEA
Submitted by urkabil on Thu, 2013-04-18 10:51.How to include water buoyancies effect in analysis for an abaqus model. The abaqus model is developed using shell and solid elements
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'Getting your paper noticed' - Watch our latest training webcast
Submitted by Laure Ballu on Wed, 2013-04-17 14:56.At Elsevier, we are committed to supporting authors and reviewers. We have developed several series of freely-available, bite-sized training webcasts containing some useful tips and tricks on a range of valuable topics.
http://www.elsevier.com/authors/publishing-connect-training-webcasts
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TNT expolosion
Submitted by arashmaleki on Tue, 2013-04-16 11:59.I'm trying to simulate with ABAQUS a explosion of TNT and the effect of that on a metal panel. The metal panel is 200mm away from explosive. It is about 100g TNT. I now about the subroutine VDLOAD. Which options I could use else in ABAQUS? Is it posible to define a explosion lake this with *EOS? If yes, which element type I should use for explosive set? Should I define a element set for air, if I use *EOS?
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Defining material properties in ansys
Submitted by newton91 on Tue, 2013-04-16 10:31.How to input stress strain details into ansys in materila modelling?
I have the stress strain points in a excel format table....and also in graph..
fracture analysis in polymers
Submitted by newton91 on Tue, 2013-04-16 09:52.How to find J integral using ansys of a CT specimen?
Both for 2D and 3D
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matlab
Submitted by afsoon gharib on Fri, 2013-04-12 18:54.please help me to solve mechanical engineering design problem of rolling contact bearing with matlab. thank u so much.
turning simulation in abaqus
Submitted by srbavanty on Fri, 2013-04-12 08:13.
simulation of Turning of particulate reinforcement in abaqus
simulation of Turning of particulate reinforcement in abaqus
Dear Gropu member,
I am josyula, working on machinability study of composites on abaqus .
1) i need help in modeling of particulate reinforce composite.
2) i need help in simulation of turning in abaqus.
if an body know anything about modeling and simulation reply me or guide me properly to achive out put.
thank
josyula
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simulation of Turning of particulate reinforcement in abaqus
Submitted by srbavanty on Fri, 2013-04-12 08:12.
1st Indian Conference on Applied Mechanics (INCAM 2013) between July 4th to July 6th 2013
Submitted by Gouse on Fri, 2013-04-12 06:49.Dear Friends,
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New book: FEA of composites using Abaqus
Submitted by ebarbero on Thu, 2013-04-11 07:05.New textbook includes an explanation of the concepts involved in the detailed analysis of composites, a sound explanation of the mechanics needed to translate those concepts into a mathematical representation of the physical reality, and a detailed explanation of the solution of the resulting boundary value problems by using commercial Finite Element Analysis software such as Abaqus. Included are more than fifty fully developed examples interspersed with the theory, as well as more than seventy-five exercises at the end of chapters, and more than fifty separate pieces of Abaqus "pseudocode" (a novel idea for the first time introduced in this textbook).
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FEA
Submitted by urkabil on Wed, 2013-04-10 19:08.Using Abaqus, hanging some mass in Truss element (T3D2), facing numerical singularities and lack of convergence due to Truss elements have no initial stiffness to resist loading perpendicular to their axis. If a stress-free line of trusses is loaded perpendicular to its axis in Abaqus/Standard. Kindly suggest me how to overcome this.
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multilayer material photoelasticity measurement
Submitted by sigmacoder on Tue, 2013-04-09 09:14.Hi,
i'm in an internship, and i want to study the stress destribtuion with photoelasticity method, but my problem is that the material that i have is not homogenious but there ares two layers. I can do the measurement for the two material separated, but i dont know how to do that for my layared material.
anyone have an idea about how to do photoelasticity measurement for multilayere materials ?
Thanks.
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Exponential model W (strain energy density function)- Zero stress zero strain condition
Submitted by maverick_269 on Mon, 2013-04-08 21:17.
Hi,
I am new here and have a very basic question on the Strain Energy Density (SED) function of exponential model.
This is the exponential model SED form : W=a(e(b(I1-3))-1)
Now we have certain postulates such as that
1.W=0 when there is no deformation and
2. stress=0 when strain =0.
When there is no deformation I1=3 and hence W=0, which is correct.
However, when we take the 1st derivative of W with respect to I1 to get our stress and then substitute I1=3 we don't get stress=0.
I know this is a standard model used very often, so I am obviously wrong in my understanding of how the 2nd postulate works for SED functions.
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ANSYS APDL query
Submitted by sbmarwadi on Thu, 2013-04-04 13:49.hi
I want to determine the number of cycles required to propagate a crack upto certain dimentions or vice-versa?
Does ansys APDL has that capability to do fatigue analysis of a growing crack.
my problem is analysis of elliptical corner crack present at shell nozle juntion.
if yes,please tell what is to be done in ansys 13.0 APDL for this?
thanks and regards
swapnil
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ANSYS diffusion analysis
Submitted by GTMS on Thu, 2013-03-28 16:33.Hello,
I try to simulate diffusion between two solid plates under the action of temperature with ANSYS. They fixed in both side.
But I do not have an idea how to do it.
ASM Educational Symposium on Additive Manufacturing in partnership with Oak Ridge National Laboratory
Submitted by Amit Pandey on Tue, 2013-03-26 21:41.
http://www.ornl.gov/sci/physical_sciences_directorate/mst/ASM_Symposium2013/index.shtml
The Oak Ridge Chapter of ASM International, in partnership with Oak Ridge National Laboratory is proud to organize ASM Educational Symposium: "Developments and Trends in Additive Manufacturing," April 18, 2013, National Transportation Research Center, 2360 Cherahala Boulevard, Knoxville, TN.
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