期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Thermo-Mechanical Analysis of the Sealing Performance of a Diesel-Engine Cylinder Gasket
1
作者 Xulan Wang Zezhong Chen +6 位作者 Changzhen Liu Wei Ren Bo Wu Shude Ji Xiaofei Chen Shijie Wen Yonggang Hao 《Fluid Dynamics & Materials Processing》 EI 2021年第4期821-831,共11页
Taking the combustor composite structure of a high-strength diesel engine as the main research object,dedicated tests have been conducted to verify the accuracy of three distinct cylinder gasket pressure simulation mo... Taking the combustor composite structure of a high-strength diesel engine as the main research object,dedicated tests have been conducted to verify the accuracy of three distinct cylinder gasket pressure simulation models.Using the measured cylinder gasket compression rebound curve,a gasket unit has been designed and manufactured.For this unit,the influence of the bolt pretension,cylinder body and cylinder head material on gasket sealing pressure has been investigated systematically in conditions of thermo-mechanical coupling.The results show that the bolt pretension force is one of the most important factors affecting the cylinder gasket sealing pressure.The change of the body material has little effect on this pressure.The cylinder gasket seal pressure decreases progressively with the reduction of the elastic module of the cylinder head material. 展开更多
关键词 Cylinder gasket bolt pretension force SEALING cylinder head material
下载PDF
Analytical study on pretensioned bolt-cable combined support of large cross-section tunnel 被引量:7
2
作者 LUO JiWei ZHANG DingLi +3 位作者 FANG Qian LI Ao SUN ZhenYu CAO LiQiang 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2020年第9期1808-1823,共16页
To study the mechanical responses of large cross-section tunnel reinforced by pretensioned rock bolts and anchor cables, an analytical model is proposed. Considering the interaction between rock mass and bolt-cable su... To study the mechanical responses of large cross-section tunnel reinforced by pretensioned rock bolts and anchor cables, an analytical model is proposed. Considering the interaction between rock mass and bolt-cable support, the strain softening characteristic of rock mass, the elastic-plastic characteristic of bolt-cable support, and the delay effect of installation are considered in the model. To solve the different mechanical cases of tunneling reinforced by bolt-cable support, an analytical approach has been put forward to get the solutions of stress and displacement associated with tunneling. The proposed analytical model is verified by numerical simulation. Moreover, parametric analysis is performed to study the effects of pretension force,cross-section area, length, and supporting density of bolt-cable support on tunnel reinforcement, which can provide references for determining these parameters in tunnel design. Based on the analytical model, a new Ground Response Curve(GRC)considering the reinforcement of bolt-cable support is obtained, which shows the pretension forces and the timely installation are important in bolt-cable support. In addition, the proposed model is applied to the analysis of the Great Wall Station Tunnel, a high-speed railway tunnel with a super large cross-section, which shows that the analytical model of bolt-cable support was a useful tool for preliminary design of large cross-section tunnel. 展开更多
关键词 bolt-cable combined support analytical model pretension force large cross-section tunnel REINforceMENT
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部