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浏览/检索结果: 共2条，第1-2条 帮助 限定条件 内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Laboratory study on physical and mechanical properties of hydrate sediment samples 会议论文 24th International Ocean and Polar Engineering Conference, ISOPE 2014 Busan, Busan, Korea, Republic of, June 15, 2014 - June 20, 2014 作者:  Wang SY(王淑云);  Zhang XH(张旭辉);  Lu XB(鲁晓兵);  Nie XY(聂雪媛) 收藏  |  浏览/下载：16/0  |  提交时间：2017/05/27 Hydrate saturation  Hydrate sediments  Laboratory studies  Physical and mechanical properties  Strength increase  Stress-strain behaviors  Time domain reflections  Tri-axial compression tests   Study of the neural network constitutive models for turfy soil with different decomposition degree (EI CONFERENCE) 会议论文 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China Lv Y.; Nie L.; Xu K. 收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25 The turfy soil is of a special humus soil. The decomposition degree is the main factor on the physical and mechanical properties of turfy soil. To build the turfy soil constitutive model  there are a few shortages such as the calculation cumbersome and low accuracy for parameter value with the method of traditional models. Furthermore  those methods did not reflect the influence of strength that effected by decomposition degree of the turfy soil. In this paper  the relationship of stress-strain with different decomposition degrees of turfy soil was carried out through indoor tests. Based on above experimental results  an improved method  which divided into different zones according to different decomposition degrees of turfy soil and calculated combining with neural network constitutive model is put forward. The result shows that  the neural network of turfy soil has good fitting precision and good generalization ability. It can fully describe the influence of the turfy soil. 2011 IEEE.