交通事故中，側面碰撞因缺乏足夠的緩衝空間，對車內乘員的生命安全構成嚴重威脅。為提升車輛側向被動安全設計效率，利用有限元素法 (FEM) 結合高生物擬真性的碰撞人偶模型進行虛擬測試，已成為當今車輛工程的關鍵技術。本研究旨在LS-DYNA環境下，實現並系統性驗證最先進之側向碰撞人偶——WorldSID 50百分位男性有限元素模型，並將其應用於簡化之側撞環境中以評估結構防護效能。
本研究首先依循國際規範，執行假人頭部、頸部、肩部、胸部、腹部及骨盆等部位之動力學校準試驗，確認其各項動態響應皆符合標準範圍，確立模型之可靠度。隨後，將驗證無誤之人偶導入簡化車門側向碰撞環境中，透過調整輸入動能（改變台車質量）、變更側撞桿幾何形狀（圓柱與方柱）以及配置緩衝材 (Confor Foam) 建立多組實驗。藉由擷取假人各感測器之歷史數據，對照現行TNCAP安全規範，並代入簡易外傷分數 (AIS) 之受傷風險曲線進行量化評估。
模擬結果證實，本研究所建置之WorldSID模型具備高度的動態響應可靠度與物理敏銳度。該模型能精確反映動能衰減對上半身傷害指標的顯著改善，並透過骨盆受力極值發生時間的延遲特徵，成功捕捉車門結構潰縮空間耗盡後產生的壓底效應。此外，假人模型亦能敏銳地量化因側撞桿改變所引發的傳力路徑轉移，記錄防護效益的權衡現象。本研究不僅確立了該有限元素模型作為評估車體結構幾何與剛性分佈優劣的可靠工具，更為未來導入全車尺度側撞模擬與乘員約束系統最佳化奠定了基礎。

Side collisions pose a severe threat to occupant safety due to the lack of sufficient buffer space in vehicle structures. To enhance the efficiency of passive safety design, utilizing the Finite Element Method (FEM) alongside highly biofidelic crash test dummy models for virtual testing has become a crucial technology in modern automotive engineering. This study aims to implement and validate the finite element model of the advanced WorldSID 50th percentile male side impact dummy within the LS-DYNA environment, and to apply it to a simplified side-impact scenario to evaluate structural protection efficacy. Initially, calibration tests were simulated in accordance with international standards, confirming that all dynamic responses fall within standard ranges and establishing the model's reliability. Subsequently, the validated dummy was integrated into a simplified side-impact environment. Multiple experimental groups were established by modifying the input kinetic energy, altering the side impact beam geometry, and incorporating buffer materials (Confor Foam). By extracting historical data from the dummy's sensors, a quantitative evaluation was conducted using the Taiwan New Car Assessment Program (TNCAP) standards and the Abbreviated Injury Scale (AIS) injury risk curves. The simulation results verify that the established WorldSID model possesses high dynamic response reliability and physical sensitivity. The model accurately reflects the significant improvement in upper body injury metrics resulting from kinetic energy attenuation, and captures the bottoming-out effect on the pelvis caused by the depletion of crush space. Furthermore, the model quantifies the load path shift induced by changes in the side impact beam, precisely recording the trade-offs in protective benefits. This study not only establishes the finite element model as a reliable tool for evaluating the geometry and rigidity distribution of vehicle structures but also lays a foundation for future full-scale vehicle side-impact simulations and occupant restraint system optimization.

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