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How to model delamination in laminated composites?

Submitted by praveenyr on

Hi,

  I'm Praveen doing my Master of Technology Project. I wanted to know how to model delaminated composites in ANSYS. Whether to use Teflon layer as delamination between the plies or creating air gap between the plies? And also wanted to know how to use cohesive zone elements or interface elements to create delamination. Can anyone help me? I ve attached images for references. 

Siemens US Intern Opportunity in Fracture Mechanics

Submitted by zhangjd on

Siemens Corporate Research (SCR), a division of Siemens Corporation, located in Princeton, New Jersey (USA) is Siemens' largest research center outside of Europe. SCR excels in transferring academic research into innovative products, and works in close collaboration with clinical and industrial partners. With more than 250 scientists, engineers, and technical experts, the company helps its customers and strategic partners grow their businesses in the fields of healthcare, automation, production, energy, industry, information and communications.

 

Effect of electrical boundary conditions on the polarization distribution around a crack in a ferroelectric single domain

Submitted by Jie Wang on

Polarization distributions around an open crack with different electrical boundary conditions in a single crystal ferroelectric are investigated by using a phase field model. The surface effect of polarization is taken into account in the phase field model, which has not been included in previous ferroelectric crack models. The simulation results show that the impermeable crack and the crack filled with air have a significant influence on the polarization distribution, while the permeable and the crack filled with water have little influence.

mathematical model for a crack emanating from one rivet hole and approaching another

Submitted by anand_mtech on
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Hi All,

 

i am doing my m. tech project on " FE modeling and validating to find stress intensity factor for a crack emanating from one rivet hole and approaching another rivet hole".I have developed the FE model in ANSYS and tabulated stress intensity factor at crack tip from different crack length. But to validate my result i want an mathematical model or formula. Please suggest me an formula to find KI at the crack tip for this problem.