• 제목/요약/키워드: Conical Spring

검색결과 22건 처리시간 0.062초

자동차 클러치 다이어프램 스프링 하중 특성 및 민감도 해석 (Load Characteristics and Sensitivity Analysis for an Automotive Clutch Diaphragm Spring)

  • 이병수
    • 한국자동차공학회논문집
    • /
    • 제14권1호
    • /
    • pp.54-59
    • /
    • 2006
  • An analytical solution for deflection-load characteristics of a conical disk spring used especially in the automotive manual transmission clutch applications is proposed in order to take into account the effects of friction and large deformation. The conical disk spring, or the diaphragm spring, has a hinge support, an application point of release load at the tip of the fingers and an application point of clamp load near but inside the outer perimeter of the conical disk spring. The friction coefficient is assumed to be a constant regardless of the speed of deflection and the magnitude of loads. Comparison with experimental shows a good agreement with the analytical prediction. Also, the sensitivity of the clamp load due to variations in the geometrical parameters of the conical disk spring is calculated and discussed.

철도차량용 코니컬 고무스프링 특성 분석 연구 (Analysis on The Properties of Conical Rubber Spring for Railway Rolling-stock)

  • 허현무;유원희;박태원
    • 한국철도학회:학술대회논문집
    • /
    • 한국철도학회 2007년도 춘계학술대회 논문집
    • /
    • pp.1578-1583
    • /
    • 2007
  • The suspension system of railway rolling-stock is composed of the primary and secondary suspension elements. Recently, a conical rubber spring is widely used as the primary suspension element due to the merits of the three directional stiffness characteristics. So, understanding the properties and characteristics of the conical rubber spring is very important from the viewpoint of vehicle stability and efficient maintenance. Thus, this study is started to acquire the basic data for maintaining spring elements efficiently. For this, we tested the conical rubber spring samples including a new and old specimen with aging. As a test result, we have obtained the property characteristics of the aged spring comparing with the new product and we describe the results.

  • PDF

소형로봇을 위한 원추형 스프링 기반의 도약 메커니즘의 개발 (Development of Conical Spring-based Jumping Mechanism for a Portable Robot)

  • 김병상;이장운;김현중;;송재복
    • 대한기계학회:학술대회논문집
    • /
    • 대한기계학회 2007년도 춘계학술대회A
    • /
    • pp.1195-1200
    • /
    • 2007
  • It is desirable that the guard robot should be small-sized and light-weighted to increase its portability. In addition, it should be able to overcome a relatively high obstacle to cope with different situations. The jumping robot can reach a higher place more rapidly than other locomotion methods. This research proposes the jumping mechanism based on the conical spring for a small robot. Both the clutch mechanism and conical spring are incorporated into the jumping mechanism. In the clutch mechanism, the spring can be immediately compressed and released by one actuator with the planetary gear train and one-way clutch. The robot equipped with the jumping mechanism can overcome the obstacles which are higher than its height. In this paper, the characteristic of the conical spring for the jumping robot is determined and the small-sized, lightweight jumping mechanism is developed. The validity of the jumping mechanism was verified by various experiments. It is shown that the robot using this mechanism can provide good mobility in the rough terrain.

  • PDF

마찰을 고려한 접시 스프링의 하중 변위 곡선 예측 (Prediction of Load-displacement of the Disc Spring with the Friction)

  • 신동호;이정윤;오재응
    • 한국소음진동공학회논문집
    • /
    • 제22권4호
    • /
    • pp.344-351
    • /
    • 2012
  • A disc spring consists of a conical disc. A load-displacement formula was newly developed in the form of energy method to consider both rigid and friction. The cross section of the disc spring has identical slope angles at the bottom of conical. To solve such a problem, an energy method calculation is proposed. To achieve the goal of this study, the proposed calculation is extended to a disc spring with friction. A firm basis background study based on Almen's work is presented in developing a new numerical approach to predict the available formulation for a disc spring with friction.

마찰을 고려한 접시 스프링의 하중 변위 곡선 예측 (Prediction of Load-Displacement of the Disc Spring with the Friction)

  • 신동호;이정윤;오재응
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2011년도 추계학술대회 논문집
    • /
    • pp.572-577
    • /
    • 2011
  • A disc spring consists of a conical disc. A load-displacement formula was newly developed in the form of energy method to consider both rigid and friction. The cross section of the disc spring has identical slope angles at the bottom of conical. To solve such a problem, an energy method calculation is proposed. To achieve the goal of this study, the proposed calculation is extended to a disc spring with friction. A firm basis background study based on Almen's work is presented in developing a new numerical approach to predict the available formulation for a disc spring with friction.

  • PDF

끝이 잘린 원추형 셸의 진동해석 알고리즘의 개발 (Development of Vibrational Analysis Algorithm for Truncated Conical Shells)

  • 여동준
    • 동력기계공학회지
    • /
    • 제9권3호
    • /
    • pp.58-65
    • /
    • 2005
  • This paper deals with the free vibrations of truncated conical shell with uniform thickness by the transfer influence coefficient method. The classical thin shell theory based upon the $Fl\ddot{u}gge$ theory is assumed and the governing equations of a conical shell are written as a coupled set of first order differential equations using the transfer matrix. The Runge-Kutta-Gill integration and bisection method are used to solve the governing differential equations and to compute the eigenvalues respectively. The natural frequencies and corresponding mode shapes are calculated numerically for the truncated conical shell with any combination of boundary conditions at the edges. And all boundary conditions and the intermediate supports between conical shell and foundation could be treated only by adequately varying the values of the spring constants. Numerical results are compared with existing exact and numerical solutions of other methods.

  • PDF

가변길이 엔드팁을 갖는 원추형 스프링을 이용한 도약로봇의 이동성 향상 (Mobility Improvement of a Jumping Robot using Conical Spring with Variable Length Endtip)

  • 김기석;김병상;송재복;임충혁
    • 제어로봇시스템학회논문지
    • /
    • 제15권11호
    • /
    • pp.1108-1114
    • /
    • 2009
  • Mobility is one of the most important features for a guard robot since it should be operated in rough places. A wheel-based mobile robot capable of jumping is an appropriate structure for a guard robot because it can easily satisfy the requirements for small guard robots. The jumping robot can reach a higher place more rapidly than other locomotion methods. This research proposes a small robot equipped with the jumping mechanism based on the conical spring with the variable length endtip. The variable length endtip enables the independent control of the jump force and jump angle which are related to the jump height and jump distance, respectively. Various experiments demonstrated that the proposed jumping mechanism can provide the independent control of jump force and jump angle, and improve the mobility of a small robot to overcome an obstacle. Furthermore, a combination of the jumping mechanism and the PSD sensor to measure the distance to the step enable the jumping robot to autonomously climb stairs.

Model test of an inverted conical cylinder floating offshore wind turbine moored by a spring-tensioned-leg

  • Shin, Hyunkyoung;Cho, Sangrai;Jung, Kwangjin
    • International Journal of Naval Architecture and Ocean Engineering
    • /
    • 제6권1호
    • /
    • pp.1-13
    • /
    • 2014
  • A new 5-MW floating offshore wind turbine moored by a spring-tensioned-leg was proposed for installation in about 50m water depth. Its substructure is a platform of the inverted conical cylinder type with massive ballast weight plate at the bottom. A 1:128 scale model was built for the preliminary engineering development. The model tests in waves and wind were carried out to estimate motion characteristics of this platform in the Ocean Engineering Wide Tank of the University of Ulsan. Its motions were measured and the RAOs were compared. The proposed floating offshore wind turbine showed a good stability and decent responses in waves, wind and operation of the wind turbine.