强度与环境
彊度與環境
강도여배경
STRUCTURE & ENVIRONMENT ENGINEERING
2013年
6期
33-38
,共6页
唐文%修建生%方红荣%王洪锐%贺启林
唐文%脩建生%方紅榮%王洪銳%賀啟林
당문%수건생%방홍영%왕홍예%하계림
随机振动%正弦振动%疲劳损伤等效
隨機振動%正絃振動%疲勞損傷等效
수궤진동%정현진동%피로손상등효
random vibration%sine wave vibration%equivalence of fatigue damage
弹(箭)体结构件在飞行过程中承受振动载荷作用,不同振动量级、振动时间下的疲劳损伤等效是快速评估结构环境适应性的重要手段。本文基于 Miner 准则和材料 S-N 曲线,得到疲劳损伤等效的定量关系,对MIL-STD-810F中的相关表述进行了澄清及讨论,介绍了等效关系在加速试验及可靠性试验中的应用。
彈(箭)體結構件在飛行過程中承受振動載荷作用,不同振動量級、振動時間下的疲勞損傷等效是快速評估結構環境適應性的重要手段。本文基于 Miner 準則和材料 S-N 麯線,得到疲勞損傷等效的定量關繫,對MIL-STD-810F中的相關錶述進行瞭澄清及討論,介紹瞭等效關繫在加速試驗及可靠性試驗中的應用。
탄(전)체결구건재비행과정중승수진동재하작용,불동진동량급、진동시간하적피로손상등효시쾌속평고결구배경괄응성적중요수단。본문기우 Miner 준칙화재료 S-N 곡선,득도피로손상등효적정량관계,대MIL-STD-810F중적상관표술진행료징청급토론,개소료등효관계재가속시험급가고성시험중적응용。
Rocket unit is under vibration Loadings. Equivalence analysis technology of fatigue damage is an important method in evaluating structure environmental adaptation at different level and time. Based on Miner’s Rule and S-N Approach, a quantitative equivalent relationship of fatigue damage was proposed, then the correlational content in MIL-STD-810F was discussed and clarified. The formula was applied in the acceleration and reliability test.