本文研究車用輪胎MAXXIS MAZ1(235/45/R17)之輪胎力學，並以擬靜態壓縮輪胎實驗及商用有限元素軟體LS-DYNA模擬接觸計算分析並比較實驗和模擬結果，在動態方面，利用LS-DYNA，模擬輪胎在乾地上的滾動態響應的數值研究，助於了解輪胎接觸力學行為。 輪胎是由橡膠和簾布層組成，胎紋和胎邊，由特殊橡膠組成，而橡膠具有不可壓縮之性質且為一個非線性的材料行為，因此在數值模擬方面，橡膠的材料描述使用Mooney-Rivlin理論，在胎面下的結構為簾布層，簾布層的組成為複合材料，其組成有內面膠，尼龍，鋼絲，和兩邊固定之鋼條等，此部分為輪胎幾何材料最重要部份，其材料的設計大多可依輪胎要求的各種性能和輪胎種類，做出設計與製造，簾布層複材材料行為使用古典積層板理論(Classical Laminate Theory)。
由擬靜態實驗結果和模擬驗證，模擬的部分與實驗結果大致相符，在動態方面也模擬輪胎經過不同的路面狀況時，如平地和路面凸角，並對其接觸力學行為響應做出數值分析和討論，如此可供對於設計與製造輪胎模具的參考，並配合著設計與模擬，而非以經驗的方式製造輪胎模具，如此可以省時且節省製造成本，並成為設計的參考依據，為本文的研究目的。

The purpose of this work is to study the response of an inflated MAXXIS VICTRA MA-Z1 (245/45/R17) radial tire with a simulated car weight loaded quasi-statically. In addition, the dynamic contact simulation of tire rolling on a dry-flat roadway and bump was also studied. A commercial Finite Element Commercial Code - LS-DYNA was used to perform these numerical contact simulations for the complex materials which constitute the fiber reinforced steel belted radial tire. The tire studied here is composed of rubber tread and the reinforcing composite layers (i.e. the inner liner, carcass, steel belt, bead filler and bead wires) beneath the external tread region. The Mooney-Rivlin constitutive law was adopted to describe the non-linear behavior of rubber material, and the classical laminated theory was also used to describe the stress-strain behavior of the reinforcing composite layers. Quasi-static tests were conducted experimentally with a given weight progressively loaded to the suitable pressure inflated tire. In these quasi-static experiments, a simulated rigid road surface is fixed and the tire was pushed toward the rigid contact surface at a moving slowly rate. The corresponding contact force and the compressed displacement after contact were measured. In addition, the contact pressure in the region between the tire tread and the simulated rigid road surface was also found using a color sensitive film to compare contact region of simulation result. The quasi-static tire compression test results were then compared with the LS-DYNA numerical simulated results. In addition, the dynamic contact simulations of tire rolling on a dry-flat roadway and bump are presented and the deformation pattern and local contact stress distribution is also studied.

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