In order to study the impact resistance performance of reticulated shell under multi-point impact load, the multi-point elastic-plastic impact and destructive impact test of Kiewitt 6 (K6) single-layer spherical reticulated shell are carried out. The dynamic strain of key members, the dynamic displacement and the dynamic acceleration of key nodes are recorded during the multi-point impact process. The equivalent size numerical model of the test model is established by using the ANSYS/LS-DYNA simulation program, and the test conditions are simulated and analyzed. The peak strain and strain time history curves of the key members, the peak displacement and displacement time history curves of the key nodes, and the peak acceleration and acceleration time history curves of the key nodes in the test and simulation conditions are compared and analyzed. The energy transformation and energy transmission in the entire process of impact are studied at the same time. Results indicated a good agreement between the simulation results and the experimental results, and the dynamic response of the structure has the same trend. The number and position of impact points have a greater influence on the dynamic response of the impact area, while the influence on the non-impact area is smaller. With the increase of the number of impact points, the strain and displacement of the impact area of the reticulated shell gradually increase, but the acceleration change has no clear trend. At the same time, the experiment verified three deformation modes of the reticulated shell structure under the multi-point impact load.

为研究网壳在多点冲击载荷下的抗冲击性能，对Kiewitt 6（K6）单层球形网壳进行了多点弹塑性冲击和破坏性冲击试验。记录多点冲击过程中关键构件的动态应变、关键节点的动态位移和动态加速度。利用ANSYS/LS-DYNA仿真程序建立试验模型等效尺寸数值模型，对试验条件进行仿真分析。对关键构件的峰值应变和应变时程曲线、关键节点的峰值位​​移和位移时程曲线、关键节点的峰值加速度和加速度时程曲线进行对比分析。同时研究了撞击全过程中的能量转换和能量传输。结果表明，仿真结果与试验结果吻合较好，结构的动力响应趋势一致。撞击点的数量和位置对撞击区域的动态响应影响较大，而对非撞击区域的影响较小。随着冲击点数量的增加，网壳冲击区域的应变和位移逐渐增大，但加速度变化无明显趋势。同时，试验验证了网壳结构在多点冲击载荷作用下的三种变形模式。