FINITE ELEMENT MODELING OF 100% OVERLAPPED CHS UNIPLANAR K-JOINTS (INVESTIGATION OF THE FAILURE MODES)

Leary Pakiding


Abstract


A Finite Element Modeling of 100% Overlapped Circular Hollow Section (CHS) Uniplanar K-Joints has been performed in order to investigate the failure modes. Sixteen variations are modelled using Finite Element Package MARC-Mentat. Based on the Finite Element Analysis, the main area which the failure modes occur is in the intersection between the braces. Brace Local Buckling (BLB) is the most common failure modes that appear in this type of joint. However, this failure mode cannot be directly judged as the failure mode of the joint because it is possible that this is only the failure of the member (lap brace). Additionally onset of cracking (C) also one of the failures that appears in each joint. The last failure mode which appears is the Brace Bending (BB) which only experienced by joints with lower 2γ value.


Keywords


K-Joint, Failure Mode, Chord, Brace, Finite Element Modelling

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