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1. ÖУº¼ÆËã½á¹û ÎÊ£ºÊÇCalculation result»¹ÊÇCalculated results¡£½øÒ»²½Ëµ£¬Accumulation calculation resultsÊÇ·ñÓ¦¸ÃдΪcalculation results of accumulation ? 2. ÖУºÃ¿¸öÊÔÑé¼þҪʧЧʱµÄÀÛ»ýËðÉË£¨accumulative fatigue damage£© ÎÊ£ºÊÇ·ÒëΪthe accumulative fatigue damage when the specimen reaches its failure»¹ÊÇthe accumulative fatigue damage of each specimen when it reaches failure 3. Ó¢£ºA, B, C, D and E are five commonly used accumulative damage models in the multiaxial accumulative fatigue damage calculation. Therefore, for sake of comparison, they are also selected in this paper to calculate the accumulative fatigue damage sum. The five models are briefly reviewed in the following. ÎÊ£ºÉÏÃæÕâ¶Î»°ÓÐÎÊÌâÂð£¿Éó¸åÈËÔÚ±ßÉÏ´òÁËÒ»¸ö²î£¬µ«Ã»ËµÎªÊ²Ã´¡¡ 4. ÖУºÕâÀïµÃµ½ÓëAÄ£ÐÍ(A-Law)²î²»¶àÏàͬµÄ¾ùÖµºÍ±ê×¼²î²¢²»Ææ¹Ö Ó¢£ºit is not surprising to get almost same mean values and standard deviations compared with those A-Law. ÎÊ£ºÕâÑù˵¶ÔÂð£¿ÌرðÊǾäβµÄÄǸöthose ¡£ÎÒ±¾À´Ã»ÓÐдthose£¬µ«ÊÇÉó¸åÈ˼ÓÁËÒ»¸öthoseÔÚÄÄÀï 5.ÖУº´Ó½×¶ÎA£¨Stage-A£©µ½½×¶ÎB£¨Stage-B)µÄת»»ËÙÂʱ»CÓ°Ïì Ó¢£ºthe switching speeding from Stage-A to Stage-B was affected by C ÎÊ£ºÕâÑù¿ÉÒÔÂð£¿ÓиüºÃµÄÑ¡ÔñÂð 6. Ó¢£ºTherefore, by using these XX to construct YY, only the variation of loading path would have an impact on the fatigue damage accumulation. The effect caused by the variation of A could be eliminated. ÎÊ£ºÉÏÃæÕâ¶Î»°ÓÐÎÊÌâÂð£¿Éó¸åÈËÔÚ±ßÉÏÒ²´òÁËÒ»¸ö²î |
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RXMCDM: ½ð±Ò+1, ¶àлӦÖú£¡ 2014-08-14 09:55:26
ÏèÓÚÌìÏÂ: ½ð±Ò+6, ·ÒëEPI+1 2014-08-14 15:57:23
RXMCDM: ½ð±Ò+1, ¶àлӦÖú£¡ 2014-08-14 09:55:26
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1¡¢¶þÕß¶¼¿ÉÒÔÓá£Accumulation calculation results¿É¸ÄΪ£ºAccumulated calculation results. 2¡¢accumulative fatigue damageÕâÖÖ˵·¨´æÔÚÂ𣿺ÃÏñ¸ü¸Ä˵³É£ºcumulative fatigue damage»òÕßaccumulated fatigue damage ÁíÍ⣬the accumulative fatigue damage when the specimen reaches its failureºÍthe accumulative fatigue damage of each specimen when it reaches failure¶¼²»ÊÇÍêÕûµÄ¾ä×Ó£¨Ò²ÐíÄãûÓиø³öÍêÕû¾ä×Ó£©¡£²»¿¼ÂÇ´ËÒòËØÍ⣬ÎÒÈÏΪǰºóÁ½ÖÖ˵·¨¶¼ÊÇ¿ÉÒԵ쬵«ºóÕ߸üÓÐÇ¿µ÷Ö®Òâζ¡£ 3¡¢ÔÚÎÒ¿´À´»¹ÊÇÓëÇ°ÃæÁ½¸öÎÊÌâÒ»Ñù£¬²»¸ÃÓÃaccumulative£¬¸ÃÓÃcumulative»òaccumulated£»ÁíÍ⣬for sake of comparisonÓ¦¸ÃΪ for the sake of comparison¡£ 4¡¢it is not surprising to get almost THE same mean values and standard deviations AS compared with those OF A-Law. 5¡¢the switching RATES (or SPEED) from Stage-A to Stage-B was affected by C 6¡¢Ç°Ã潫would have¸ÄΪhas»òhad£¨½áÂÛ»òÌÖÂÛʱ²»»áÓÃwould°É); ºóÃæ¸ÄΪ£ºThe effect of the variation of A could be eliminated. |
2Â¥2014-08-13 21:26:10
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