现代制造工程
現代製造工程
현대제조공정
MODERN MANUFACTURING ENGINEERING
2014年
4期
52-56
,共5页
参数化%基频%模态分析%有限元%优化%谐振响应%参数化设计语言
參數化%基頻%模態分析%有限元%優化%諧振響應%參數化設計語言
삼수화%기빈%모태분석%유한원%우화%해진향응%삼수화설계어언
parameterization%fundamental frequency%modal analysis%finite element%optimization%harmonic response%APDL
运用APDL建立数控机床床身的参数化有限元模型，在ANSYS软件平台上对其进行模态分析。以建模参数为设计变量，采用随机搜索法对床身结构进行动态优化设计，优化结果使床身基频提高了7．11Hz，有效地增强了床身的抗振性，同时使其体积减小了约5．12％，减轻了床身自重。在动力学优化基础上对床身结构进行谐振响应分析，获得了激振区域的幅频响应曲线与应力频率响应曲线，确定了有较大危害的共振频率区域，为数控机床的高速化设计和减振降噪提供了重要依据。
運用APDL建立數控機床床身的參數化有限元模型，在ANSYS軟件平檯上對其進行模態分析。以建模參數為設計變量，採用隨機搜索法對床身結構進行動態優化設計，優化結果使床身基頻提高瞭7．11Hz，有效地增彊瞭床身的抗振性，同時使其體積減小瞭約5．12％，減輕瞭床身自重。在動力學優化基礎上對床身結構進行諧振響應分析，穫得瞭激振區域的幅頻響應麯線與應力頻率響應麯線，確定瞭有較大危害的共振頻率區域，為數控機床的高速化設計和減振降譟提供瞭重要依據。
운용APDL건립수공궤상상신적삼수화유한원모형，재ANSYS연건평태상대기진행모태분석。이건모삼수위설계변량，채용수궤수색법대상신결구진행동태우화설계，우화결과사상신기빈제고료7．11Hz，유효지증강료상신적항진성，동시사기체적감소료약5．12％，감경료상신자중。재동역학우화기출상대상신결구진행해진향응분석，획득료격진구역적폭빈향응곡선여응력빈솔향응곡선，학정료유교대위해적공진빈솔구역，위수공궤상적고속화설계화감진강조제공료중요의거。
Parametric and finite element model of CNC machine tool ’ s bed was set up by ANSYS Parameter Design Language ( APDL) ,modal analysis of the bed was made it in ANSYS .Some modeling parameters were used as design variables ,and optimal design with dynamic of the bed was came true by random search ,in results,fundamental frequency of it was increased by 7.11 Hz,then vibration resistance of it was strengthened effectively ,besides,volume of the body was decreased by about 5.12%,so self-weight of it was also reduced .Harmonic response analysis was finished based on dynamic optimal of the bed ,curves about amplitude-frequency response and stress-frequency response were acquired , and resonance frequency ranges those have more harmful were confirmed ,then an important basis was offered to not only high speed design ,but also vibration and noise reduction of the CNC machine tool .
