What Are the Differences Between the Contact Formulations?
When choosing a formulation to be used in a contact region, you basically decide the mathematical method that the code will use to enforce the contact compatibility condition (for example, no...
View ArticleNormal Lagrange Contact Formulation and When to Use It
There is a complex contact relationship between the roots of a turbine blade and the corresponding rotor. For applications that involve tight radial tolerances and accumulated layers of multiple...
View ArticleStructural Relaxation Due to Creep Impacts Performance
Consider the impact of structural relaxation Many engineering structures must be designed to operate successfully in hostile thermal environments. Pipe hangers supporting hot and heavy steam lines,...
View ArticleConvergence Failure of a Nonlinear Solution
My nonlinear model will not converge. Where do I begin? There are many different reasons for convergence failure of a nonlinear solution. While the causes and fixes may vary widely from one model to...
View ArticleWhat Causes Element Formulation Errors in Nonlinear Structural Runs?
When the ANSYS structural code issues an element formulation error in the solver output, it is basically reporting that there has been a mathematical breakdown in the computation of the deformed...
View ArticleTips and Tricks for Dealing with Element Formulation Errors in WB-Mechanical
Is an element formulation error ruining your day? Add in a command object with ‘NLDIAG,eflg,on’ in the Structural Environment branch to execute as part of a restart after convergence failure. From the...
View ArticleHow to Keep a Balanced Life…and a Balanced FEA Model
The key to a balanced life is clean living. There are some simple rules to live by. Always tell the truth, even if it makes you look bad. Don’t spend more than 10 dollars for every 10 dollars that you...
View ArticleUnderstanding Contact Reaction Probes in ANSYS Mechanical
There are three methods available for extracting the reaction forces across a contact region in WB-Mechanical: Contact(Underlying Element) Contact (Contact Element) Target (Underlying Element) When you...
View ArticleWhat’s New with Contact Technology in ANSYS 15.0?
Contact technology is used extensively throughout ANSYS Mechanical and Mechanical APDL to enforce compatible behavior between different portions within a model. With each Release, ANSYS continues to...
View ArticleWhat is Mesh Nonlinear Adaptivity?
Many FEA applications can benefit from the ability to strategically modify a mesh during solution, in order to simulate challenging geometry distortions which otherwise cannot be solved. Unlike manual...
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