【摘要】 本文从碰撞变形机理出发,采用薄膜理论,以数学表达式来描述舷侧板遭受球鼻首撞击时的变形模态,分别导出了舷侧板大变形下的撞击力P(λ),撞击能U(λ)和最大残余变形λ的理论公式;文中还从工程应用出发,导出了简化计算的解析式;经过实验验证,理论公式和简化计算公式,均与实验值吻合较好.更多还原

【Abstract】 The collision of bulb bows against ship-side plates is theoretically and experimentally examined. Based on the large deformation characteristics of the impacted side plate, a membrane stress analysis method instead of the well-known plastic hinge approach suitable only for small structural deformation is used. The deformation modes of the impacted plates are described by mathematical expressions, and the formulae for determining the maximum residual deformation A, the corresponding collision force P(λ) and energy U(λ) have been derived and simplified. It is shown that the calculation results obtained by the method developed are in fairly good agreement with those obtained by experiment.更多还原