Computer Bifurcation Analysis of Rigid Frames with Yielded Columns

Framework Stability by Finite Element Method
In this note the error in the computation of the elastic critical load of columns and rigid-jointed plane frameworks by the finite element method, as developed in general by Gallagher...

Bending of Ring-Sector Plates of Variable Stiffness
For the bending of ring plates of varying thickness having rotational symmetry in rigidity, loading, and boundary conditions, a wide range of solutions have been reported in the literature....

Estimated Weight of Plane Building Frames
The automatic elastic design of unbraced rigid frame multistory steel buildings has been accomplished by a computer program. The technique employed makes use of approximate and exact analysis...

Trapezoidally Corrugated Plates in Shear
Rather precise elastic analyses have been made of trapezoidally corrugated plates in shear with four different kinds of discrete attachment between the ends of the corrugations and the...

Analysis of Some Double Layer Grids
An approximate method of analysis based upon the replacement of planar trussed members by analogous prismatic I-beams in double layer diagonal grids is examined. The goemetrical properties...

Evaluation of Nuclear Power Plant Structural Foundation Rigidities

Hanging Cable as Rotational Vibration Absorber
Many basic textbooks present an analysis of free vibration of a uniform cable hanging in a gravitational field. An extension to illustrate the effects of a concentrated tip mass is given...

Fictitious Strains Due to Rigid Body Rotation
The behavior of structures that exhibit large displacements under loading must be predicted through a nonlinear analysis in which terms higher than first order are included in the strain-displacement...

Linear Structural Analysis of Multistory Buildings
A technique is developed for the analysis of two or three-dimensional multistory building frames subjected to a general system of loads. Floors are assumed to be perfectly rigid in their...

Gradient Methods in Optimum Structural Design
The paper presents two new gradient-based methods for the optimum design of skeletal structures. Both methods can accommodate stress, member size, and displacement constraints and can...

Analysis of Lateral Buckling in Plane Frames
A general and systematic method of analyzing the elastic flexural-torsional buckling of rigid-jointed plane frames with I-section members and subjected to in-plane loads is developed....

Simplified Analysis of Framed-Tube Structures
A simplified method is presented for the analysis of framed-tube structures subjected to lateral loads. The rigidly jointed perimeter frame panels are replaced by equivalent orthotropic...

The CSM Cell — a Borehole Device for Determining the Modulus of Rigidity of Rock

Buckling of Slanted Columns
A slanted column may represent an inclined member of a truss, a frame, or a meridional element of an axisymmetrically deformable conical shell with rigid edges. Such a structure has a...

Displacements and Stresses in Nonhomogeneous Solid
An analysis is described for determining the displacements and stresses in an isotropic nonhomogeneous elastic solid whose modulus of rigidity varies with the depth. The solid, which is...

Stress Distributions Around Shallow Buried Rigid Pipes
Normal and tangential loads on shallow buried rigid pipes due to superimposed surface loads are calculated by the finite element method. The effects of the variations in the length of...

Stiffness Center Method
A approximate analysis of rigid frames using a new concept, called the stiffness center, is presented. It has been shown that when a skeletal elastic system is idealized as a configuration...

Ultimate Strength of Multistory Steel Rigid Frames
Load displacement relationships of large plane multistory steel rigid frames have not been investigated extensively. A numerical technique for the elasticplastic analysis of rigid frames...

Differential Settlement of Buildings
Published case histories of differential settlement reveal a relation between the maximum measured differential settlement and damage to buildings. This relation, first proposed by Skempton...

 

 

 

 

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