For high rockfill dams, the grain crushing in high stress field may raise the deformation rate of dam body and should be considered in numerical calculation. 对于高堆石坝而言,在高应力场作用下堆石颗粒将明显破碎,从而导致坝体变形率增加,因此,在高坝数值计算中必须考虑颗粒破碎的影响。
The paper set up mechanics model of roll cylinder mill, inquired into crushing stress of materials by mill and materials clamp angle and energy requirement problems. 本文建立了辊筒磨的力学模型,探讨了辊筒磨对物料的粉碎力、以及物料钳角、单位质量能耗等问题,并通过实验进行了验。
The grain crushing of rockfill materials with high stress level has significant influence on its strength and deformation mechanisms. 高应力水平时堆石料的颗粒破碎对其强度和变形机制有重要影响。
Fracture of formation of crushing funnel results from the extension of tension crack developing due to tension stress. 断裂破坏即破碎漏斗形成是在拉应力作用下,张裂纹扩展的结果。
The results indicate that: both strain and extrusion ratios are in direct proportion to crushing stress, while temperature is in inverse proportion to crushing stress. The more D-value of stress area s_1 and s_3 is, the more crushing stress. 结果表明,应变和挤压比与破碎应力成正比,温度与破碎应力成反比,受力面积s1与S3相差越大,破碎应力就越大。
When the axial residual stress exists, the stretching stress can reduce and the crushing stress can enhance the compressive strength. 而当在石油套管上存在轴向残余应力时,拉应力使石油套管的抗压溃强度降低,而压应力使石油套管的抗压溃强度有所提高;
The new trend of fine crushing technology is outlined and the stress is laid on the development process, working principle, structure and application of new type fine crushing equipment& agitating grinding mill which has explored new thinking of modern super fine crushing technology. 概述了超细粉碎技术的新动向。重点阐述了新型超细粉碎设备&搅拌磨的发展历程、工作原理、结构及应用,为现代超细粉碎技术开拓新的思路。
Cell-size has a significant effect not only on the crushing stress and plastic modulus of aluminum foam, but also on the strain-rate sensitivity of material of this kind. 泡孔尺寸不仅影响着材料的屈服强度和塑性模量等,还影响着材料的应变率敏感性。
The particle crushing probability in the model is derived on the basis of the Weibull distribution formula in the frame of statistical fracture mechanics with the use of the nominal stress concept. 在统计断裂力学Weibull分布公式基础上利用名义应力给出了多尺度分级模型意义下颗粒破碎概率;
CONCLUSION: With the alveolar bone resorption, the post materials make great impacts on the peak value of maximum crushing stress in the residual teeth root, especially the mechanic capability of post materials. 结论:伴牙槽骨吸收时,牙桩的材料成为影响剩余牙根内部最大主应力峰值的决定性因素,桩材料的力学性能对剩余牙体的影响更为显著。
Damage in K9 glass irradiated by pulsed laser is mainly caused by thermal stress damage which is mainly determined by crushing stress. 脉冲激光对K9玻璃的损伤主要是热应力损伤,热应力损伤的压应力起主要作用。
The finite element analysis of the tarsometatarsal joints in normal conditions and in the crushing injuries was carried out. The images of equivalent stress distribution were obtained. 进行了在正常及模拟碾压伤情况下跗跖关节有限元应力分析,得到了跗跖关节应力云图。