一种结构垂向冲击载荷测量方法分析研究

某些作用在舰船结构上的瞬态动载荷,由于受到客观条件限制（比如空间狭小）,不方便直接通过压力传感器获得其大小,而该载荷对于船体结构设计又关系重大,如何取得外载荷曲线便成了十分关键的问题。针对实船某承受特殊冲击载荷的基座结构,通过测量其结构动应变,利用材料应变-应力关系曲线得出了冲击载荷的时间历程曲线,最后用有限元法对该冲击载荷测量曲线进行验证。结果表明,当结构应变率小于3mm/mm/s时,可采用静态材料应变-应力关系曲线对结构冲击载荷进行测量计算,从而为此类结构外载荷测量方法提供参考。

Method for Measuring Vertical Impulsive Load on Ship Structure

Some loads acting on structure of ship are not easy to gain by pressure sensor in some condi- tion,such as a narrow space. These loads are important to the design of ship, thus how to get the curves of the loads is becoming more critical. To measure the dynamic strain of the special structure,which received impulsive load is presented. Using the strain-stress curve of material,it can get the impulsive load curve. At last Finite Element Method(FEM) is used to validate the result of the measurement. It is fou...