摘要
用阶跃函数构造三角脉冲载荷分段函数,利用汉克尔变换和拉普拉斯变换求解了三角脉冲载荷作用下浮冰的动力学方程,得到了其响应函数的积分式.计算了浮冰在三角脉冲载荷作用下的瞬态响应,分析了浮冰的几何、物理参数以及水深对响应的影响,揭示了浮冰和水的固-液耦合使得浮冰在冲击过程中具有丰富的动力学行为的原因.研究表明:计算结果与实验结果基本一致,证明了此方法的有效性和合理性.
The multi-partition function of triangular pulse was represented with a whole function ac-cording to the Heaviside unit-step function.The dynamic equation of floating ice plate under triangu-lar pulse load was solved through the Hankel transformation and the Laplace transformation.The function of response and numerical calculation results of transient response of floating ice plate under triangular pulse load were obtained.The influences of geometrical parameters of floating ice plate, physical parameters of floating ice plate and the reservoir depth on the displacement response were an-alyzed.Various dynamic properties of floating ice plate due to the coupling of floating ice and water were revealed.The experiment results show that the calculation results agree with the experimental data,which is proof of the effectiveness and rationality of the calculation method.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第1期53-57,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
科技部基础研究项目(2008DFR704607)
海军工程大学自然科学基金资助项目(HGDQNSQJJ12001)
关键词
三角脉冲载荷
浮冰
瞬态响应
汉克尔变换
黏弹性
triangular pulse load
floating ice
transient response
Hankel transformation
viscoelas-tic
