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Hello Everyone,

Im relatively new to Abaqus and I have to carry out a bifurcation analysis of a pipe. Once that is done I need to add the imperfection wavelength and amplitude calculated to the pipe and carry out further simulations.

Ive been trying very hard to get a direction as to where to start with it. Can anyone please help me with it? I know that you need to carry out a buckle analysis that will give you a wrinkle pattern on the pipe. This inturn will add up to the bifurcation scheme that you get.

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I tried to perform a cohesive zone analyse in ANSYS, followed the turorial in HELP file. I used contact element to model cohesive zone. and I find out that:

1, if I use standard material of ansys to define bulk element, like defined by 'MP,EX,1,2.1e5   MP,PRXY,1,0.33 ' or 'tb,biso', I can get a reasonable contact result;

2, if I use usermat file to define bulk element, 'tb,user', then the solusion also is done, but the resulte seems not correct. two part of model not contact each other but  some sections of them are coincide.

Generally
diesel engine uses only the heat of compressed air to ignite the fuel as it is
injected into combustion chamber. But in low temperatures the colder air will
make it a bit harder to start the engine than hot air and it can overcome by installing
spark plugs which are essentially very small, but powerful heaters in the
combustion chamber.i want to discuss about the general working of diesel
engine in low temperatures and the changes should be made to work more
efficiently.

I would like to use Dflux to give a Temperature and dT/dt related heat flux. Can Dflux be used for this purpose? I am not sure how to get dT/dt ? Or other subroutine can fulfill this purpose?

Thank you 

Hi,

I am looking for a short (one week) course on fluid-structure interactions. Does anyone can advice me such a course?

Thanks,

Stan