CAJ | 학술논문

提出一种弹塑性耦合迭代的接触修正方法，将该方法用于客车侧翻一步碰撞算法中，通过对假定的最大变形构形进行碰撞接触判断、弹性回弹计算及塑性能量平衡迭代计算，可获得计算车体结构最终变形所需的初始解变形构形。以某12 m公路客运车辆的典型车身段为研究对象，利用该方法进行了客车侧翻碰撞模拟试验，结果表明，与Ls-dyna等增量法及侧翻试验结果对比，该算法计算效率高，试验次数少，模拟时间是Ls-dyna等增量法的1/10，具有实际应用价值。
제출일충탄소성우합질대적접촉수정방법，장해방법용우객차측번일보팽당산법중，통과대가정적최대변형구형진행팽당접촉판단、탄성회탄계산급소성능량평형질대계산，가획득계산차체결구최종변형소수적초시해변형구형。이모12 m공로객운차량적전형차신단위연구대상，이용해방법진행료객차측번팽당모의시험，결과표명，여Ls-dyna등증량법급측번시험결과대비，해산법계산효솔고，시험차수소，모의시간시Ls-dyna등증량법적1/10，구유실제응용개치。
An elastic-plastic coupling iteration method is proposed, which is used in one-step algorithm for bus rollover collision. By collision contact estimation of the assumed maximum deformation contour, elastic resilience calculation and plastic energy balance iteration calculation, the original solution deformation configuration needed to calculate body structure’s final deformation can be obtained. The typical bus body section of a 12-meter bus is selected as the research object, and this method is applied in bus rollover collision simulation test, which shows that compared with Ls-dyna and rollover test, the one-step algorithm features high calculation efficiency, less test cycles, and simulation duration is only one tenths of Ls-dyna method, which has practical application value.