储氢合金因其具有储氢量大、能耗低和可循环使用等优点，在燃料电池、氢贮存与运输、核工业等领域都有广阔的应用前景。但是在生产和贮存储氢合金的受限空间内，存在氢气和可燃粉尘两个共生危险源，其爆炸危险性和破坏性不容忽视。本项目拟通过激波诱导粉尘云装置、高速摄影仪和LS-DYNA数值模拟技术，研究激波诱导下储氢合金粉尘的动力学特征；采用哈特曼管、20L球形爆炸测试系统，研究典型储氢合金粉尘的爆炸特性及其影响因素；利用电磁悬浮技术实现粉尘的均匀悬浮，并结合激波管测试系统和基于CE/SE方法的数值计算，研究典型储氢合金粉尘云的DDT机理。通过本项目的研究，可望得到氢氧爆轰诱导的储氢合金粉尘云形成机理、典型储氢合金粉尘爆炸特性和DDT机理。研究成果可为储氢合金粉尘爆炸的预防、控制、消防及事故调查提供理论依据、基础数据和相应的建议，有助于储氢合金材料的应用和推广，因而具有重要的学术意义和应用价值。

Hydrogen storage alloys have broad application prospects in fuel cells, hydrogen storage and transportation, nuclear industry etc, owing to the characteristics of high hydrogen storage capacity, low energy consumption and recycling use. However, there are two symbiotic dangerous sources in the confined spaces of producing and storing hydrogen storage alloys, which are hydrogen and combustible dust, and their explosion hazard and destruction can not be ignored. In the project, we plan to study the dynamic characteristics of dusts of hydrogen storage alloys under shock waves, with the help of shock waves induce dust cloud simulator, high-speed camera and numerical simulation by LS-DYNA software; By Hartmann bomb and 20L spherical explosion test apparatus, the explosion characteristics and influential factors of dust of typical hydrogen storage alloys will be tested; The deflagration to detonation transition (DDT) mechanism of typical hydrogen storage alloy dusts will be studied by shock tube and numerical simulation of CE/SE method, and electro-magnetically suspended technology will be introduced to improve the experimental effect by suspending the dusts more uniformly. If the project can be completed successfully, we will obtain the formation mechanism of hydrogen storage alloy dust clouds by shock waves on the basis of hydrogen oxygen detonation, as well as their explosion characteristics and DDT mechanism. Research results can be supplied as theoretical basis, basic data and corresponding suggestions for the prevention, control, fire and accident investigation of dust explosion of hydrogen storage alloys, and they are helpful to the application and popularization of hydrogen storage alloys, therefore, this research has very important academic significance and application value.