摘要
根据薄板弯曲自由振动理论，利用差分法从数值上计算了悬臂薄板及其附加集中质量时的基本频率，导出了基本频率间的相关关系，给出了用加速度计测定炉管材料的弹性模量的方法，确定了炉管蠕变损伤沿径向的分布。其结果与超声波探伤结论相吻合。
ased on free vibration theory of bending of thin sheetdeformation, the basic frequencies fo cantilever shcets andcantucver sheets with concentrated mass were calculatednumerically by using difference method,the relation;be-tween basic frequencies were derived,the met hod using anaccelerometer to measure the elastic modulus of the materi-als of furnace tubcs. was given,the radial distribution,ofcreep damages of furnace tubes was determined.The re-sults had a good agreement with the results fo ultrdsonicflaw detection.
出处
《化工机械》
CAS
北大核心
1995年第5期294-298,共5页
Chemical Engineering & Machinery
