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Characterization of welded polymer assemblies

Abstract : For different welded plastics assemblies by laser TWIST® we experimentally establish a plastic and breaking intrinsic stress criterion. Lot of plastic materials has been studied. We present here, the characterization of ABS assemblies and PA66 assemblies. The yield surfaces which characterize the limit of elasticity and the rupture, have been described by a modified Drucker-Prager criterion identified in the case of complex mixed modes state of stresses coupling tensile and shear stresses. For design purpose of welded zones, the proposed Drucker-Prager criterion has been used for the calculation and the simulation of breaking welded ABS plates and welded PA66 stepped plates. The comparison between experimental and numerical simulation values shows a relatively good agreement.
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Submitted on : Thursday, March 10, 2016 - 3:33:29 PM
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Vladimir Gantchenko, Jacques Renard. Characterization of welded polymer assemblies. Revue des composites et des matériaux avancés, Lavoisier, 2015, 25 (3-4), pp.407-418. ⟨10.3166/rcma.25.1-12⟩. ⟨hal-01286277⟩



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