Ansys Crack Magnitude

Following is the meshed model prepared for XFEM analysis 1. 1, İs it required to define local coordinate system at crack tip in XFEM method? 2, Even in SING method I cannot define my crack tip inside an element, why? In order to constant amplitude loading I follow the following, time, 1.0 deltim, 0.02, 0.02,0.02 while CGROW, FCG, METH, LC! Life-cycle method CGROW, FCG, SRAT, 0! Stress-ratio!loading frequency is 25 Hz 3,Does the abovementioned strategy true? 4, How I can monitor cycle by cycle crack propagation and related crack parameters (a, deltaK and N)?

5, Crack front node number mentioned does not listed in APDL node list call; is this a virtual node produced fro XFEM? 6, By changing the loading magnitude and frequency I always get the following graphic. There is no change in the amount of crack growth (graphically). Your helps and comments to help me fınd out my answers are fully appreciated in advance. Hi Sohrab, 1. 1, İs it required to define local coordinate system at crack tip in XFEM method? It is usually helpful, but it is not required if the crack is aligned with the global cartesian system.

Using ANSYS engineering simulation software to design your products ensures that you can keep that promise, with every product and every order for every customer. Watch this video to see a few of the many ways ANSYS has helped manufacturers, medical personnel, teachers, researchers and others meet the challenges they face every day with confidence. Is an American public company based in Canonsburg, Pennsylvania.It develops and markets engineering simulation software. Ansys software is used to design products and semiconductors, as well as to create simulations that test a product's durability, temperature distribution, fluid movements, and electromagnetic properties.

2, Even in SING method I cannot define my crack tip inside an element, why? The singularity method allows a crack to terminate within an element, but the original crack tip must be located at node.

DoeDoes the above mentioned strategy true? It looks OK How I can monitor cycle by cycle crack propagation and related crack parameters (a, deltaK and N)? You need to use *GET to obtain those values (see example 3.5.5 in the MAPDL Fracture Analysis Guide Crack front node number mentioned here does not listed in APDL node list call; is this a virtual node produced from XFEM? Yes By changing the loading magnitude and frequency I always get the following graphic. There is no change in the amount of crack growth (graphically). The graphic results are scaled to be visible. Use /DSCALE to change the scale factor Regards, Sandeep.

Thank you Sandeep for your Answer. Youre reply are so helpful. National health programs of india j kishore latest edition. 1, İs it required to define local coordinate system at crack tip in XFEM method? It is usually helpful, but it is not required if the crack is aligned with the global cartesian system.

My concern is that, Does XFEM in APDL automatically take care about tip coordinate to calculate SIFs? If not, then how should crack tip coord'nate be defined to follow crack tip during propagation How I can monitor cycle by cycle crack propagation and related crack parameters (a, deltaK and N)? You need to use *GET to obtain those values (see example 3.5.5 in the MAPDL Fracture Analysis Guide in case of crack tip extention Iam not sure how to retrieve crack tip coordinates (as it is a virtual node(in 2D case) ) to measure crack extention at each substep loading. Can you help me in this regard? By changing the loading magnitude and frequency I always get the following graphic.