In this paper, a mechanics model is founded on effect of spherical dynamic explosion in multiphase medium, based on the systems of blasting pressure decay and of reflection in the interface. 利用爆炸应力波在介质中传播的衰减规律和在界面处的反、透射规律,建立起了集中装药在多相介质中爆炸的力学模型;并运用工程实例来说明这种力学模型的应用。
Tests on Mechanics Parameters of RPC and Its Capabilities under Contact Explosion RPC力学参数及抗接触爆炸性能试验
This paper presents a fracture mechanics model of smooth blasting and pre-split blast-ing, analyzes the function of stress waves and quasi-static pressure of explosion in blasting process. 本文提出了光面爆破和预裂爆破的断裂力学模型,分析了应力波、爆生气体准静态压力在爆破破裂过程中的作用。
The finite element method is main numerical method in solid mechanics, but remeshing and coupling analysis of multi-materials are difficult to solve problems in large deformation, explosion or impact etc. 有限元法是求解各种力学问题的主要数值计算方法,但在计算弹塑性大变形和爆炸冲击等问题时,重新划分网格和不同介质的耦合分析是有限元法的难题。
Using the ancient solid mechanics methods to explain mechanical behavior of rock under explosion load can't reveal the whole process of rock blasting, and meanwhile, it's difficulty to ascertain damage and fracture in rock. 根据以往经典固体力学方法解释岩石在爆炸载荷作用下的力学行为,是无法揭示岩石爆破破碎的全过程,也难以确定岩石内的损伤和破坏程度;
Based upon the principle of dynamic fracture mechanics, the developing process of crack with limited length or half infinite length is discussed. The effect of quasi-static pressure of explosion gas on crack development is researched. 应用动态断裂力学原理,分析了在爆炸冲击荷载作用下,岩体内半无限长和有限长裂纹的扩展过程,研究了爆炸气体准静态压力对裂纹扩展的影响。
According to the mechanics analysis and engineering practice, this paper puts forward a design method of the highest blast cut and the effective measures of flying rock protection in the explosion of tubular buildings. 依据力学分析和工程实践,提出了筒形结构物折叠式爆破时上段爆破缺口的设计方法与飞石防护的有效措施。
Performance research on nano mechanics of electro-thermal explosion spraying coating 电热爆炸喷涂层的纳米力学性能研究
The investigation in this thesis is meaningful for the anti-shock and protective design of the warship and provides reference for the future research on the mechanics of the interaction between the underwater explosion bubble and the structure. 研究结论有益于舰船结构抗冲击与防护设计,也为气泡载荷作用下舰船结构毁伤机理研究提供了参考依据。
The detonation velocity measurement is one of the most fundamental problems in explosive researches, mechanics of explosion and rock blasting. 爆轰速度的测试是炸药研究、爆炸力学与爆破破岩研究中最基础的问题之一。