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AnalySwift Introduces PreVABS Preprocessor for Composite Blade Software

10 April 2018

AnalySwift has announced the availability of a versatile new pre-processor, called PreVABS, for its VABS composite wind turbine blade simulation software.

The VABS software is an engineering code for rigorous simulation of composite slender structures, especially helicopter and wind turbine rotor blades, and the new PreVABS is said to greatly improve the user experience. Students in the Multiscale Structural Mechanics (MSM) group at Purdue University developed the PreVABS under the direction of Dr Wenbin Yu, Professor in the School of Aeronautics and Astronautics. PreVABS helps engineers in the early stages of simulation of composite slender structures (composite beams). It is designed to reduce the workload of preparing input files for VABS and to make the process automatic for design and optimisation purposes.

“Cross sections with general and airfoil shapes can be created,” says Wenbin Yu. “This replaces an earlier program, also called PreVABS, which had been discontinued and was no longer available. PreVABS is a completely new code, which has many improved capabilities. Unlike the previous program, PreVABS is now free and open source.”

Features of PreVABS include:

  • capability to create nose mass in an airfoil type cross section;
  • the post-processing function to visualise the recovered strains and stresses in Gmsh;
  • capability to read stacking sequence code;
  • design-oriented parametric input files to draw the cross section naturally;
  • isolated material database file to enable reusability; and
  • global transformation capability to release the burden of calculating geometries by hand.

 

PreVABS is available for free download through the Composites Design & Manufacturing HUB (cdmHUB.org) hosted by Purdue University.






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