• Title/Summary/Keyword: Condition factor

Search Result 4,502, Processing Time 0.032 seconds

전통주거(傳統住居) 공간의 생리적(生理的) 특성(特性)에 관한 연구 - 전북지방 농촌주택(農村住宅)을 중심으로 - (A study on the Physiological Character of living Space in Traditional Koaean House - Focsed on the rural house in Chonbuk province -)

  • 김용집
    • 건축역사연구
    • /
    • 제8권2호
    • /
    • pp.59-72
    • /
    • 1999
  • The purpose of this study is to find the spatial factors, strucure of living and activity in traditional Korean house through the Phiysiological view, Spatial factors of the house are concerned to the interior environment and sanitary condition, The elements of respiratory, nerve, temperature sence. vision, hearing, smelling have good condition and touch, pressure sence, pain, metabolism are poor in the house, Ventilation, Lighting, pleasant condition of interior environment are concerned to the elements that mentioned above and have most important meaning in the relation rate of space as 1st factor. And 2nd factor is for metabolism, housework and rest, 3rd factor ie for temperature sence, privacy and reproduction. The relation rate of factors concering interior environment are high in the upper class house. Anbang has important meaning in the relation of living structure and relation sequence of space is anbang, Konnonbang, kitchen, toilet, water place, auxiliary buildings. The relation rate of activity is high in interior space in winter and exterior space in summer.

  • PDF

실험계획법을 이용한 스핀드럼의 시밍 최적조건 선정 (Selection of the Optimum Seaming Condition for Spin Drum Using Design of Experiment)

  • 김의수;이정민;김병민
    • 대한기계학회:학술대회논문집
    • /
    • 대한기계학회 2007년도 춘계학술대회A
    • /
    • pp.1511-1516
    • /
    • 2007
  • Because Seaming process of MPJ (Mechanical Press Joining) has various design factors such as thickness, bending radius, seaming width, caulking press width and the dynamic factor such as multistage plastic working, elastic recovery, residual stress, the optimum conditions can't be easily determined. Using a design of experiment based on the FEM, which has several advantages such as less computing, high accuracy performance and usefulness, this study was performed investigating the interaction effect between the various design factor as well as the main effect of the each design factor during drum MPJ and proposed optimum condition using center composition method among response surface derived from regression equation of simulation-based DOE.

  • PDF

온도 조건에 따른 제진재의 손실계수 및 탄성계수 측정 (A Study on the Evaluation of the Loss factor and Young's Modulus of Damping Materials on Temperature Condition)

  • 이장명;주호민;이준
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2001년도 춘계학술대회논문집
    • /
    • pp.1192-1196
    • /
    • 2001
  • Damping materials show variant characteristics depend on frequency or temperature condition. Therefore, we need to measure damping material characteristics called a loss factor or a young's modulus varying frequency or temperature condition. In this article, measuring procedure and method has been introduced for damping material using a sticking damping material with a thin steel beam. And it shows a temperature effect to damping materials.

  • PDF

비틀림 마운트형 터빈 블레이드의 파괴기구에 관한 연구 (A Study on Fracture Mechanism of Torsion-Mounted Type Turbine Blade)

  • 홍순혁;이동우;장득열;조석수;주원식
    • 대한기계학회:학술대회논문집
    • /
    • 대한기계학회 2001년도 춘계학술대회논문집A
    • /
    • pp.585-590
    • /
    • 2001
  • Turbine blade is subject to torsional load by torsion-mount, centrifugal load by rotation of rotor and repeated bending load by steam pressure. Turbine with partially cracked blade has normal working condition at initial repair time but vibratory working condition at middle repair time due to crack growth. Finite element analysis on turbine blade indicates that repeated bending load out of all loads is the most important factor on fatigue strength of turbine blade. Therefore, this study shows root mean square roughness has linear relation with stress intensity factor range in 12% Cr steel and can predict loading condition of fractured turbine blade.

  • PDF

표면거칠기와 유한요소법을 이용한 터빈 블레이드의 파손해석에 관한 연구 (A Study on Failure Analysis of Turbine Blade Using Surface Roughness and FEM)

  • 홍순혁;이동우;이선봉;조석수;주원식
    • 한국자동차공학회논문집
    • /
    • 제9권6호
    • /
    • pp.170-177
    • /
    • 2001
  • Turbine blade is subject to torsional load by torsion-mount, centrifugal load by rotation of rotor and repeated bending load by steam pressure. Turbine with partially cracked blade has normal working condition at initial repair time but vibratory working condition at middle repair time due to crack growth. Finite element analysis on turbine blade indicates that repeated bending load out of all loads is the most important factor on fatigue strength of turbine blade. Therefore, this study shows root mean square roughness has linear relation with stress intensity factor range in 12% Cr steel and can predict loading condition of fractured turbine blade.

  • PDF

Some properties of paper and wet-end characteristics with Polyvinylamine

  • 손동진;김봉용
    • 한국펄프종이공학회:학술대회논문집
    • /
    • 한국펄프종이공학회 2005년도 추계학술발표논문집
    • /
    • pp.259-263
    • /
    • 2005
  • This study was performed to introduce recently developed Polyvinylamine as a wet-end process improving aids and paper properties improving aids. As a retention and drainage aids, cationicity of Polyvinylamine was a very important factor of BCTMP and ONP stock condition. As a dry tensile strength aids, The hydrogen bond of acrylamide functionality and hydroxyl functionality of the pulp was a very important factor of LBKP stock condition and cationicity of Polyvinylamine was a very important factor of BCTMP and ONP stock condition.

  • PDF

노인 요통에 관련된 요인조사 (A Survey on Factor Related to Rate of Low Back Pain in Eldery Person)

  • 김순자
    • 대한물리치료과학회지
    • /
    • 제4권1호
    • /
    • pp.291-301
    • /
    • 1997
  • This study was conducted to fine out factors related with the complains low back pain in eldery persons. The Questionnaires was done for 273 eldery persons who live in Pusan, Anyang, Ansan region from May 1996 ro April 1997. The results were as follows : 1. The prevalence rate were 49.5% and among them 20.74% were male was while 68.12% which shows high prevalance of female 2. There were no statistical significance except sex difference(P>0.05) 3. There statistical different with some factor fators which includes general health condition, the frequency of treatment, sleeping bed style, condition for future life (P<0.05). But showed no statistical significance with the other factors. 4. When compared between rural and urban area, there were some statistical difference among some factor such as ; where to treat, moring exercise frequency, walking duration, sleeping bed style, agricultural work involement, prepartory condition for future life.(P<0.05)

  • PDF

FINITE ELEMENT SOLUTIONS OF PARTIAL DIFFERENTIAL EQUATION WITH MULTIPLE CONCAVE CORNERS

  • Kim, Seokchan;Woo, Gyungsoo
    • 호남수학학술지
    • /
    • 제40권4호
    • /
    • pp.785-794
    • /
    • 2018
  • In [8] they introduced a new finite element method for accurate numerical solutions of Poisson equations with corner singularities. They consider the Poisson equations with homogeneous Dirichlet boundary condition with one corner singularity at the origin, and compute the finite element solution using standard FEM and use the extraction formula to compute the stress intensity factor, then pose a PDE with a regular solution by imposing the nonhomogeneous boundary condition using the computed stress intensity factor, which converges with optimal speed. From the solution they could get an accurate solution just by adding the singular part. This approach uses the polar coordinate and the cut-off function to control the singularity and the boundary condition. In this paper we consider Poisson equations with multiple singular points, which involves different cut-off functions which might overlaps together and shows the way of cording in FreeFEM++ to control the singular functions and cut-off functions with numerical experiments.

다구찌 기법의 잡음인자 수준 정하는 기법 제안 (Propose to new Method determining level of Noise Factor of Taguchi Method)

  • 이상복
    • 한국품질경영학회:학술대회논문집
    • /
    • 한국품질경영학회 2009년도 추계학술대회
    • /
    • pp.317-323
    • /
    • 2009
  • In this paper, we propose new methods which is to determine level of noise factor. Even Taguchi give level of noise factor which is best(or maximum) and worst(or minimum) condition, we give level of noise factor which is representative value by observing noise factor frequency. Sometimes level of noise factor is given one, two and three. We know this method is more fit in real fields.

  • PDF

다양한 확률분포 하에서 다구찌 기법의 잡음인자 수준 정하는 기법 (Method determining level of Noise Factor of Taguchi Method under various probability distribution)

  • 이상복
    • 품질경영학회지
    • /
    • 제37권4호
    • /
    • pp.10-15
    • /
    • 2009
  • In this paper, we propose new methods which is to determine level of noise factor. Even Taguchi give level of noise factor which is best(or maximum) and worst(or minimum) condition, we give level of noise factor which is representative value by observing noise factor frequency. Sometimes level of noise factor is given one, two and three. We know this method is more fit in real fields.