| 汽车稳定杆用55Cr3弹簧钢的低周疲劳性能 |
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| 引用本文： | 王锐,李世其.汽车稳定杆用55Cr3弹簧钢的低周疲劳性能[J].物理测试,2006,24(1):6-9,19. |
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| 作者姓名： | 王锐 李世其 |
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| 作者单位： | 马鞍山钢铁股份有限公司技术中心，安徽 马鞍山 243000 |
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| 基金项目： | 国防科工委民口配套研制项目 |
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| 摘 要： | 从汽车稳定杆用钢的实际应用需求出发，采用轴向应变控制方法，应变循环比R为-1，试验频率为0.1~1.0 Hz，疲劳试验加载波形为三角波，轴向总应变幅范围设定为0.35%~1.2%，测试了55Cr3弹簧钢低周疲劳性能，并对试验数据进行拟合计算，得到55Cr3弹簧钢的循环应力 应变曲线、应变 寿命曲线和过渡疲劳寿命；通过拟合Basquin和Coffin Manson公式，获得了55Cr3弹簧钢的低周疲劳寿命预测公式，拟合R2值大于0.9。通过疲劳断口分析，55Cr3弹簧钢断裂起源于试样表面，且存在多处裂纹源，裂纹共同向内扩展，最后快速断裂。
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| 关 键 词： | 55Cr3弹簧钢 低周疲劳 疲劳寿命 裂纹 |
| 文章编号： | 1001-0777（2006）01-0006-04 |
| 修稿时间： | 2005-06-04 |
Experimental Research on Dynamic Properties of Rubber Microisolator |
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| WANG Rui,LI Shi-qi.Experimental Research on Dynamic Properties of Rubber Microisolator[J].Physics Examination and Testing,2006,24(1):6-9,19. |
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| Authors: | WANG Rui LI Shi-qi |
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| Affiliation: | Technology Center, Maanshan Iron & Steel Co., Ltd., Ma′anshan 243000, China |
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| Abstract: | The experiments were carried out based on two proposed testing schemes for damping ratio of rubber materials. The transmissibilities of rubber microisolator were measured by sinusoidal steady-state sweep-frequency vibration experiments, and the properties of vibration isolation as well as the dependence of material damping on amplitude and frequency were analyzed. This research provided experimental basis for the design and application of rubber isolators. |
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| Keywords: | rubber microisolator damping ratio vibration transmissibility dependence |
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