A NEW APPROACH TO DERIVE NORMALISED PRESSURE IMPULSE CURVES FOR ELASTIC MEMBERS AGAINST EXTERNAL BLASTS

摘要：

　　Pressure Impulse (PI) diagram is a useful preliminary design tool for structures and structural members against blasts.An extensive amount of investigation has been undertaken to generalise PI curves,using Single Degree of Freedom (SDOF) theory,for elastic structural members.In this study,a new original approach also using SDOF theory,relying on the concept of effective pulse shape,is presented for determining a PI curve for any elastic member.The advantage of this approach is that it can be applied to any given type of blast load.The techniques and equations involved in this approach are outlined.The approach is then applied to external blasts.Finally,to assess the accuracy of this approach,elastic normalised PI curves generated using the new approach are compared against those obtained using the traditional methods.

关键词： Blast load pressure impulse curve single degree of freedom (SDOF) model

作者: Jonathon Dragos Chengqing Wu

作者单位: School of Civil, Environmental & Mining Engineering, The University of Adelaide, SA, Australia

会议类型: 国际会议

会议名称: The Twelfth International Symposium on Structural Engineering (第十二届结构工程国际研讨会)

会议地点: 武汉

会议语种:英文

页码: 157-162

在线出版日期: 2012-11-17（万方平台首次上网日期，不代表论文的发表时间）