CompositesWorld

SEP 2017

CompositesWorld

Issue link: https://cw.epubxp.com/i/866813

Contents of this Issue

Navigation

Page 102 of 107

101 CompositesWorld.com Design for TFP just composites, it begins by taking a basic volume of isotropic material and removing from it to maximize the objective. For example, a bracket no longer comprises solid planar pieces, but instead, material is placed only along load paths, resulting in a very organic-looking structure, similar to a tree limb. Based on the TO results, students from the University of Applied Science, Faculty of Design (Dresden, Germany) worked with the IPF group to develop an initial shape (Fig. 2, p. 102). Illustration / Karl Reque TFP Preforms for rec16 Recurve Bow Riser › The CFRP rec16 recurve bow riser design reduces riser weight by 40%, to only 600g compared to the 960g version constructed of aluminum. › The linear design process enables replacement of highly loaded aluminum parts with superior performing, lighter weight composites. › Demonstrated cost-effective manufacturing using TFP and resin infusion, including molded-in metallic inserts for attaching bow limbs integrated into the one-piece riser. In Step 2, the TO result was developed into a 3D model, using Dassault Systèmes SolidWorks. is model was used to complete a principal stress analysis, using ANSYS finite element (FE) software (ANSYS Inc., Canonsburg, PA, US). e main load case for this FEA stress analysis was a typical recurve bow draw force of 60 kg or 200N. In Step 3, the results of the principal stress analysis were used to draw an initial fiber pattern, using 2D CAD software. Preform A Preform B path 2 TFP path 1 Top limb Sight Grip Bottom limb Reaction forces (F R ) Riser (635 mm) Reaction forces (FR) 60 kg draw force (F D = 200N)

Articles in this issue

Links on this page

Archives of this issue

view archives of CompositesWorld - SEP 2017