I have used cohesive elements to create cracks now I am interested to seal the created cracks in order to study stress changes so I need to add this as a step to my analysis-
Does anybody know any trick for doing this? Can I do this by keeping the pressure inside fracture constant?-please give me comments
The default value of penalty stiffness scale factor in Ansys-Lsdyna is 0.1, when one varies this value, he/she obtains different results, the question, how can one know the right value of penalty stiffness scale factor?
I am simulating the impact of a 6mm - diameter steel solid ball with a rigid falt surface using Ansys-Lsdyna. the speed of the ball at the impact moment is low (from 1 to 10 m/s). specificly, i am intersted in the period between just touching and just leaving the ground for the first impact.
Hello
what do think why investigators await about 3 decades to calculation of local stress/strain by elastic-plastic fracture mechanics?and basically why elber's discovery[crack closure] was so important and play a key role in numerous articles?
How can i calcualtion the amount of load transfer through the contacting crack faces?
How can i determine the location of it?
Thank you
Hadi
Scientific Forming Technologies Corporation (SFTC) is currently looking for several self-motivated and talented individuals to further develop its Finite Element based software product DEFORM™. Please visit www.deform.com for more details. Ph.D in Engineering with strong background in mechanics, and/or manufacturing processes, and programming experience (FORTRAN under Windows or UNIX environment), and excellent problem solving skills are highly desirable.
Tony Evans passed away on Wednesday after a long and valiant fight against cancer. He was Alcoa Professor of Materials, Professor of Mechanical Engineering and Director of the Center for Multifunctional Materials and Structures at the University of California at Santa Barbara.
measurment of FCG based on crack tip closure concept depend on :
1- experimental technique
2-location of the measurement
3- mean stress effect on FG at high stress ratio can not be explained by the closure model due to the absense of the crack closure at high loads.
Two question can be investigated as follows:
1- why crack tip closure is popular and it widely use in hightech industry like aircraft industry acording to overwiew of scentific articles.?
A fully funded PhD research studentship is available at the University of Oxford, in the Solid Mechanics Group.
Is there any good reference for creep strength of 304 stainless steel at 1000C? I am very curious the behavior of such material at extreme conditions, like creep strength as a function of temp.
Thanks a lot,
Henghua
