【摘要】 采用莫尔法对外加单向拉力为３５％、６０％　６８％时的航空用硬铝合金ＬＹ１２ＣＺ板销钉干涉孔两边应变、应力进行了试验检测研究。结果表明，当所加外载达到或超过航空用硬铝合金ＬＹ１２ＣＺ的使用极限（即外加载荷为６７％）时，干涉量３．１％的干涉配合产生的预应力场稳定性较差，不利于抑制疲劳裂纹的萌生。更多还原

【Abstract】 The prestrain and prestress around the interference-fit hole for bald-aluminum alloy LY12CZ sheet under tension load, levels of 35% 60% and 68% ,are studied by Moiye’s method. The study shows, under 3. 1% interference level, the stability of prestress is worse when load equals or exceeds using limit (67% 0.2 loading level) of hard-aluminum alloy LY12CZ. It is adverse to prevent the emergence of fatigue crack.更多还原