Browse Publications Technical Papers 2020-01-1399

Prediction of Tow Hook and Bolt Joint strength behavior under abusive load using Virtual Test Simulation Technique 2020-01-1399

There is an increasing demand for reducing the vehicle development process and minimizing cost due to tough competition in the Automotive market. One of the major focus areas is minimizing the vehicle prototype builds that are required for physical testing during early phases of the vehicle development. Tow hooks are key structural components for the vehicle, which are designed to withstand structural strength performance under various vehicle towing conditions. Typical extreme load scenarios for the vehicle can be towing fully loaded vehicle broken down on uphill road or stuck in wet muddy conditions. To exercise the tow hook structural development in early design phase, it is important to have reliable simulation process. This paper focuses on development of virtual test simulation process that replicates the vehicle level test behavior for tow hook loading. The setup includes local model with necessary part interaction for clevis load applicator, tow hook, bolt joint and front body structure for simulating correct load transfer for tow hook. Non-linear stress analysis approach is chosen to simulate the large deformation and part interaction behavior during loading and unloading. This study provided good comparison of test and CAE results for tow hook and bolt structure with showing identical weak spot locations and comparable material elongation behavior. Abaqus solver is used for performing CAE simulation.


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