In order to guide the future blasting optimization of dongguashan mine , the blasting characteristics of the medium under various high - stresses are studied by use of reformed loading device and dynamic holophotoelastic modelling 为了指导将来冬瓜山矿的爆破优化工作,利用自行改造的加载设备和动光弹模拟试验装置,研究了不同高应力条件下的介质爆破特性。
( 4 ) under the new environment , realize planar photo elastic stress analysis . based on this , it is easy to realize spatial photo elastic stress analysis . ( 5 ) under the new environment , realize interference fringe image preprocessing ( 4 )在新的软件编程环境下,具体编写及实现了一套二维光弹应力自动分析程序,为三维光弹应力自动分析程序的编写奠定了基础。
Most of the dynamic process data in the solid material , such as the dissemination of stress waves , the fold of stress waves , and the interaction of crack and stress waves can be acquired directly by the dynamic photoelasticity experiment 动光弹实验能直接获得固体介质中应力波的传播、叠加以及裂纹与应力波相互作用的动态过程,可真实反映爆炸过程的信息与规律。
Due to the complexity of the load combinations of the gate chamber , it is difficult to perform such test on each load case . on the other hand , it is lack of the test data on the load case perpendicular to the current direction of the gate frusta till now 由于闸室的受力荷载组合较为复杂,对每种工况都做光弹试验不容易做到,且有关垂直水流方向的闸墩受力状况的试验资料迄今尚很缺乏。
In this dissertation , we use c + + language on the platform visual c + + 6 . 0 to set up a set of optical measure image strain analysis software system framework . in this framework we successfully realized planar photo elastic image strain analysis function 本文在win32平台上使用c + +语言在visualc + + 6 . 0集成开发环境下,建立了一套光测力学图像应力分析软件系统框架,成功的实现了二维光弹图像应力分析部分的功能。
Traditionally , loads of the arc gate are applied on the support or gate frusta as a set of concentrated load , but the effect range of such load on the frusta cannot be solved by material mechanics and structure mechanics . most of the load cases are fulfilled through optic - elastic test 通常弧门荷载作为一组集中荷载作用于牛腿或闸墩上,而这组荷载对闸墩受力的影响范围材料力学方法和结构力学方法是不能解决的,受力状况大部分是通过光弹试验完成。
The aerodynamics characteristic of spinning projectile with lateral jets has constitutionally difference in formation from that without jet , and it waves periodically . these characteristics are very important for the study of aerodynamics of projectile with lateral jets 与光弹体相比,旋转侧喷弹丸的空气动力特性不仅在形成机理上发生了本质变化,而且在数值上表现出复杂的波动形式,这些特点将对旋转侧喷弹丸空气动力研究带来直接和深远的影响。
According to the urgency and the necessity of reconstructing material mechanics lab , plans and suggestions were put forward in six aspects which consist of reconstructing universal material machine and photo - elastic instrument , rebuilding electrical testing lab , increasing devisable experiments , adding virtual experiments , making exhibit - boards 摘要鉴于改造材料力学实验室的紧迫性和必要性,从改造万能材料试验机、光弹仪和电测实验间,增加设计型实验项目,增加虚拟实验,制作展示板等6个方面,提出了具体方案和建议。
Based on the theoretical analysis of splitting mechanics and by the dynamic photoelasticity experiment , we studied the judgment how rock and concrete split under the affection of notched blasting . we built up the splitting mechanics model of rock and concretes under the affection of notched blasting . beyond all above , we gain the mechanism of notched directional splitting controlled blasting 本文在断裂力学理论分析基础上,通过动光弹爆破实验,探讨了在切槽爆破作用下岩石和混凝土的断裂判据,建立了在切槽爆破作用下岩石和混凝土的断裂力学模型,并由此得出切槽定向断裂控制爆破机理。
This system provides photo elastic , moire , holographic , speckle technology contained in optical measure strain and displacement analysis software interface , and mainly realizes photo elastic image collection , interference image pretreatment , automatic skeleton extract method , automatic main strain trace protraction method and planar photo elastic image strain analysis function . all the work that the author has done has established a good foundation for more realization of an intact optical measure image strain analysis software system . furthermore , engineer and lab assistant can quickly obtain concise , intuitionistic and quantificational information 该系统提供了光测力学所包括的光弹法、云纹法、全息法以及电子散斑法等技术应力和位移分析软件实现的接口,主要实现了等差线图像和等倾线图像的采集、干涉条纹图像预处理、全自动提取光弹条纹图像骨架线、全自动绘制主应力迹线以及二维光弹应力分析功能,为进一步开发完整的光测力学图像应力分析软件奠定了基础,同时使工程技术人员以及实验人员能够迅速的获取简明、直观、定量的信息。