| 围压状态下树脂砂的高温应力－应变及强度特性 |
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| 引用本文： | 张家泉,于震宗,林家骝,丁能续,沈联芸,杨彦良. 围压状态下树脂砂的高温应力－应变及强度特性[J]. 机械工程学报, 1995, 0(4) |
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| 作者姓名： | 张家泉 于震宗 林家骝 丁能续 沈联芸 杨彦良 |
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| 作者单位： | 北京科技大学，清华大学，中国第一汽车制造厂 |
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| 摘 要： | 通过高温三轴力学试验，揭示了围压对型砂应力－应变及强度特性的重要影响。提出了型砂修正的强度理论，并指出树脂砂的高温强度特性主要取决于其内摩擦特性。
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| 关 键 词： | 围压，应力－应变，树脂砂，摩擦角，粘聚力 |
STRESS-STRAIN AND STRENGTH PROPERTIES OF RESIN SANDS UNDER CIRCUMFERENTIAL PRESSURE AT ELEVATED TEMPERATURE |
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| Zhang Jiaquan. STRESS-STRAIN AND STRENGTH PROPERTIES OF RESIN SANDS UNDER CIRCUMFERENTIAL PRESSURE AT ELEVATED TEMPERATURE[J]. Chinese Journal of Mechanical Engineering, 1995, 0(4) |
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| Authors: | Zhang Jiaquan |
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| Affiliation: | Zhang Jiaquan(University of Science & Technology Beijing)Yu Zhengzong ;Lin Jialiu ;Ding Nengxu; Shen Lianyun; Yang Yanliang(Qinghua University) (China the First Automobile Works) |
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| Abstract: | The important effect of circumferential pressure on the stress-strain and strength properties of resin-bonded sands is revealed througth the high temperature triaxial tests.The modified strength theory for mold sands is proposed,and it is pointed out that the strength properties of resin bonded sands at elevated temperature are mainly depended on their shearing resistance behavior. |
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| Keywords: | Circumferential pressure Stress-strain Resin sand Angle of shearing resistance Apparent cohesion |
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