Determination of the critical loading conditions for bridges under crossing trains

The influence of LWR coolant environment to the lifetime of materials has been discussed recent years. Nowadays the consideration of environmentally assisted fatigue is under consideration in Codes and Standards like ASME and the German KTA Rules (e.g. Standard No. 3201.2 and Standard No. 3201.4) by means of so called attention thresholds. Basic calculation procedures in terms of quantifying the influence of LWR coolant environment by the Fen correction factor were proposed by Higuchi and others and are given in NUREG/CR-6909. This paper deals with the application of the proposed assessment procedures of ANL and the application to plant conditions. Therefore conservative assessment procedures are introduced without assuming the knowledge of detailed stress and strain calculations or temperature transients. Additionally, detailed assessment procedures based on Finite-Element calculations, respecting in-service temperature measurements including thermal reference transients and complex operational loading conditions are carried out. Fatigue evaluation of a PWR primary circuit component is used in order to evaluate the influence of plant like conditions numerically. Conclusions regarding the practical application are drawn by means of comparing the ANL approach considering laboratory conditions, conservative assessment procedures for the determination of cumulative fatigue usage factors of plant components and detailed assessment procedures. Plant like loading conditions, complex component geometries, loading scenarios and reference temperature transients shall be taken into account. Practical issues like the determination of the mean temperature or the strain rate have to be considered adequately.

Impact of shunt capacitor on voltage stability analysis of distribution networks under critical loading conditions

2014 First International Conference on Automation, Control, Energy and Systems (ACES) ◽

10.1109/aces.2014.6808022 ◽

2014 ◽

Author(s):

Tapan Kumar Chattopadhyay ◽

Sumit Banerjee ◽

Chandan Kumar Chanda

Keyword(s):

Stability Analysis ◽

Voltage Stability ◽

Distribution Networks ◽

Loading Conditions ◽

Critical Loading ◽

Shunt Capacitor

Selection of Drill Pipes Based on Critical Loading Conditions for Slim Hole Drilling

10.2118/36405-ms ◽

1996 ◽

Author(s):

F. Akgun ◽

D. Estrella ◽

S. Rahman ◽

B. Mitchell ◽

A. Eustes

Keyword(s):

Hole Drilling ◽

Loading Conditions ◽

Critical Loading ◽

Drill Pipes ◽

Selection Of

Experimental Methods for the Determination of Stress Intensity Factors Under Various Loading Conditions

Prospects of Fracture Mechanics ◽

10.1007/978-94-010-2314-6_35 ◽

1974 ◽

pp. 593-607 ◽

Cited By ~ 1

Author(s):

E. Sommer

Keyword(s):

Stress Intensity ◽

Stress Intensity Factors ◽

Experimental Methods ◽

Loading Conditions ◽

Intensity Factors

Buckling of a Strut Under a Compression which Varies Discontinuously

Journal of the Royal Aeronautical Society ◽

10.1017/s0368393100101373 ◽

1941 ◽

Vol 45 (368) ◽

pp. 278-280

Author(s):

Jean Drymael

Keyword(s):

Rapid Determination ◽

Moment Of Inertia ◽

Critical Loading

SummaryIt often happens that in a plane truss all joints are not transversely stiffened. If one joint of the compressed girder of a beam is free, the girder is liable to fail by buckling perpendicular to the plane of the truss, between the adjacent joints. The chart given here enables a rapid determination of the critical loading to be made. The compression and moment of inertia are assumed constant along the length of each bay, but may be different in the two bays.

DETERMINATION OF PHYSIOLOGICAL LOADING CONDITIONS AT THE HUMAN DISTAL RADIUS

Journal of Biomechanics ◽

10.1016/s0021-9290(12)70101-x ◽

2012 ◽

Vol 45 ◽

pp. S100

Author(s):

Patrik Christen ◽

Bert van Rietbergen ◽

Ingrid Knippels ◽

Ralph Müller ◽

G. Harry van Lenthe ◽

...

Keyword(s):

Distal Radius ◽

Loading Conditions ◽

Physiological Loading

Determination of the elasticity of parachute materials under dynamic loading conditions

10.2514/6.1997-1536 ◽

1997 ◽

Author(s):

Vance Behr ◽

Paul Clements ◽

Mendel Silbert ◽

Vance Behr ◽

Paul Clements ◽

...

Keyword(s):

Dynamic Loading ◽

Loading Conditions ◽

Dynamic Loading Conditions

Critical loading conditions and stress intensity factors for partial or entire closure of a Griffith crack under thermo-mechanical loading

International Journal of Fracture ◽

10.1007/bf00942714 ◽

1983 ◽

Vol 22 (2) ◽

pp. 83-90 ◽

Cited By ~ 5

Author(s):

Kang Y. Lee ◽

Sunder H. Advani

Keyword(s):

Stress Intensity ◽

Mechanical Loading ◽

Stress Intensity Factors ◽

Loading Conditions ◽

Griffith Crack ◽

Intensity Factors ◽

Critical Loading

Arbitrarily Oriented Cracks in a Reinforced Sheet

Journal of Applied Mechanics ◽

10.1115/1.3168984 ◽

1985 ◽

Vol 52 (1) ◽

pp. 13-18 ◽

Cited By ~ 5

Author(s):

C.-C. Chu

Keyword(s):

Boundary Conditions ◽

Failure Mode ◽

Fiber Orientation ◽

Loading Condition ◽

Elastic Interaction ◽

Fundamental Solutions ◽

Relative Orientation ◽

Loading Conditions ◽

Present Formulation ◽

Critical Loading

The elastic interaction between a crack and a fiber is studied for various loading conditions. Generalized from earlier work by Greif and Sanders, the present formulation is valid for arbitrary relative orientation between the crack and the fiber. Helpful design information, such as the critical loading condition and the critical fiber orientation to trigger a certain failure mode, is therefore attainable. The fundamental solutions, each associated with proper parameters and proper boundary conditions, can also be superposed to model more realistic problems.