• 제목/요약/키워드: 파워트레인 샤프트

검색결과 5건 처리시간 0.021초

자동차 파워트레인 샤프트 가공용 8축 복합가공기 베드의 유한요소 해석에 관한 연구 (A Study on the CAE Analysis of Bed of Multi-Tasking Machine for Automotive Power Train Shafts)

  • 조준현;문동주;이종찬
    • 한국기계가공학회지
    • /
    • 제14권1호
    • /
    • pp.9-14
    • /
    • 2015
  • To build a high precision machine tool and increase its productivity, structural analysis needs to be carried out for vibration and stiffness of the machine tools before any detailed design. Therefore, in this paper, static and dynamic analysis is carried out to evaluate 8-axis multi tasking machining beds for automotive power train shafts; then, selection of an appropriate device is made for application to bed design. The results of structural and modal analysis confirmed the structural characteristics of the 8-axis multi tasking machine for automotive power train shaft beds: and the second shape bed is the safest is considered secure.

자동차 파워 트레인 샤프트 가공용 8축 복합가공기의 고 강성 구조설계에 관한 연구 (High-Stiffness Structure Design of 8-Axis Multi-tasking Machine for Automotive Powertrain Shafts)

  • 문동주;조준현;최윤서;황인환;이종찬
    • 한국기계가공학회지
    • /
    • 제15권2호
    • /
    • pp.78-83
    • /
    • 2016
  • The development of an exclusive 8-axis multi-tasking machine to finish multiple cutting processes by a single piece of power equipment for securing the high-precision machining and high productivity of the series of shafts (a core part of the automotive powertrain that delivers engine power) is needed. The rigidity of the structure must be improved and the weight of the structure must be reduced to develop a multi-tasking machine with high precision and high productivity. In this paper, we perform a static structural analysis of the initial design of the multi-tasking machines and compare the results of the multi-tasking machines improved by the reinforced design and the results of the initial one. According to the results of the structural analysis, the rigidity of the reinforced machine was increased and the overall weight was decreased. Therefore, the productivity was increased.

비선형 특성을 적용한 파워트레인 마운팅 시스템의 마운트 전달력 해석 (Analysis of Mount Reaction Forces for Powertrain Mounting Systems using Nonlinear Characteristics)

  • 김진훈;이수종;이우현;김정렬
    • 동력기계공학회지
    • /
    • 제12권2호
    • /
    • pp.23-28
    • /
    • 2008
  • The primary objective of this study is to truly understand reaction force be due to engine exciting force. Exciting forces of the engine apply a source of the vehicle NVH(Noise, Vibration, Harshness). To understand reaction force was applied MSC.Nastran software. Analyzed frequency response analysis of powertrain mount system. First, engine exciting force was applied field function. Also nonlinear characteristics was applied field function : such as dynamic spring constant and loss factor. And nonlinear characteristics was applied CBUSH. Generally characteristics of rubber mount is constant frequency. But characteristics of hydraulic mount depend to frequency. Therefore nonlinear characteristics was applied. Powertrain mounting system be influenced by powertrain specification, mount position, mount angle and mount characteristics etc. In this study, we was analyzed effects of powertrain mounting system. And we was varied dynamics spring constant and loss factor of mounts.

  • PDF

직렬 4기통 엔진의 가진력 해석 (Analysis of Exciting Forces for In-Line 4 Cylinders Engine)

  • 김진훈;이수종;이우현;김정렬
    • 동력기계공학회지
    • /
    • 제12권1호
    • /
    • pp.41-46
    • /
    • 2008
  • The primary objective of this study is to truly understand exciting forces of the in-line 4 cylinders engine. Exciting forces of the engine apply a source of the vehicle NVH(Noise, Vibration, Harshness). To understand exciting forces, first was governed theoretical equations for single cylinder engine. And this theoretical equations was programming using MATLAB software. To compare theoretical analysis value, was applied MSC.ADAMS software. To determined the specification of engine(2,000cc, in-line 4) was applied ADAMS/Engine module. And this specification for engine was applied ADAMS/View and MATLAB software. The geometry model for ADAMS/View analysis was produced by the 3-D design modeling software. After imported 3-D model, each rigid body was jointed suitable. Under idle speed for engine, was analysed. The results of analysis are fairly well agreed with those of three analysis method. Using MATLAB software proposed in this study, engine exciting fores can be predicted. Also using ADAMS/Engine module and ADAMS/View software, engine exciting forces can be predicted.

  • PDF

수동형 패치를 이용한 전기차 소음 저감 (Noise Reduction of Electric Vehicle using Passive Damping Material)

  • 김현수;김병일;한완옥
    • 전자공학회논문지
    • /
    • 제54권6호
    • /
    • pp.117-122
    • /
    • 2017
  • 전기자동차 파워트레인에서 발생되는 소음은 주로 모터의 전자기력 불균형에서 오는 소음과 기어 장치의 기계 시스템에서 발생되는 소음으로 구분될 수 있다. 이 소음들은 일반적 연소 엔진음 보다는 작지만, 조용한 배경 소음 때문에 더 거슬리는 소리가 될 수 있음에도 불구하고 그 소음의 특성이나 저감 방법은 널리 알려져 있지 않다. 본 논문에서는 전기차 개발단계 혹은 완성단계에서 적용할 수 있는 전달 경로에 감쇠 수동형 패치를 부착하여 소음을 저감하는 방법을 제시하고자 한다. 먼저, 모터 소음은 모터의 동적 특성에 따라 영향을 받으며 또한 모터 토크와 어떠한 상관성을 가지는 지를 보여준다. 또한, 모터 보다는 감속기의 표면이 더 소음에 취약한 부위라는 사실을 실험적으로 보여준다. 마지막으로, 주요 소음 전달경로인 드라이브 샤프트나 감속기 하우징 표면에 패치를 부착하여 실차 평가하였으며 실험 결과는 가속보다는 감속 조건에서 소음이 저감되는 영향이 크다는 것을 보여준다.