WorldCat Identities

Baltrukonis, J. H.

Overview
Works: 10 works in 12 publications in 1 language and 27 library holdings
Roles: Author
Classifications: TL521.3.C6,
Publication Timeline
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Most widely held works by J. H Baltrukonis
A survey of structural dynamics of solid propellant rocket motors by J. H Baltrukonis( Book )

3 editions published in 1966 in English and held by 17 WorldCat member libraries worldwide

Displacements and rotations in short, circular cylindrical shells( Book )

1 edition published in 1958 in English and held by 1 WorldCat member library worldwide

The deflectional and rotational influence coefficients for an edgeloaded short circular cylindrical shell are introduced and their simplification is considered. It is shown that for a value of the shell parameter less than unity substantial simplification is possible. (Author)
Free transverse vibrations of an incompressible elastic mass contained by an infinitely long, rigid, circular-cylindrical tank( Book )

1 edition published in 1959 in English and held by 1 WorldCat member library worldwide

Natural circular frequencies of free transverse vibrations of an incompressible elastic mass contained by an infinitely long, rigid, circular-cylindrical tank are obtained as exact solutions of the equations of elasticity. Frequency coefficients are tabulated for solid and hollow cores and for, at least, four frequencies in each of the first four modes of vibration. (Author)
Axial-shear vibrations of star shaped bars, kohn-kato bounds( Book )

1 edition published in 1962 in English and held by 1 WorldCat member library worldwide

Kohn-Kato bounds are determined for the natural frequencies of axial-shear vibrations for a solid circular bar. Through conformal transformation and corresponding modification of the differential equations, this method is extended to the calculation of the natural frequencies of axial shear vibrations for a solid bar having a many-lobed plane, curved boundary. A numerical example is given for an epitrochoidal bar vibrating in the fundamental axial-shear mode. Approximate solutions are developed for the natural frequencies of free vibrations of solid propellant rocket motors with star-shaped perforations
On the geometry of the tension test specimen by J. H Baltrukonis( )

1 edition published in 1948 in English and held by 1 WorldCat member library worldwide

Free transverse vibrations of a solid elastic mass in an infinitely long, rigid, circularcylindrical tank( Book )

1 edition published in 1958 in English and held by 1 WorldCat member library worldwide

Exact solutions of the elasticity equations of motion in polar cylindrical coordinates are applied to calculate the natural circular frequencies and mode shapes for the free, transverse vibrations of a solid elastic mass in an infinitely long, rigid, circular-cylindrical tank. (Author)
Dynamics of Submarine Structures. Part I( Book )

1 edition published in 1969 in English and held by 1 WorldCat member library worldwide

A study has been conducted concerning the difficulties associated with the development of a digital computer program for the calculation of the response of highly-complex, submarine (or submerged) structures to arbitrary dynamic excitation. The complicating aspect of this problem is the solution of the equations of motion. In reality, two problems must be solved simultaneously: (1) structural vibrations, and (2) radiation of mechanical energy into the surrounding fluid. The present study was concerned almost solely with the former problem. Three methods are explored: mode superposition, Fourier transform and time marching. In each case the equations of motion are formulated by means of the finite element method. Each method is discussed in some detail. A computer program is presented for the computation of the natural frequencies of free, longitudinal vibrations of long, thin, prismatical rods
Axial-shear vibrations of an infinitely-long composite circular cylinder( Book )

1 edition published in 1960 in English and held by 1 WorldCat member library worldwide

Transverse wave propagation in a solid, elastic mass contained by an infinitely long, rigid circular-cylindrical tank( Book )

1 edition published in 1959 in English and held by 1 WorldCat member library worldwide

Dispersion equations are derived for the propagation of transverse waves along the axis of a solid, circular cylinder contained by an infintely long, circular-cylindrical tank. The tank and core are assumed welded at their interface. At least four dispersion curves are plotted for each of the first four orders and for two different values of Poisson's ratio. It is pointed out that each dispersion curve is associated with either transverse vibrations or the thickness-shear vibrations, and mode shapes are considered on this basis. (Author)
Comparison of approximate solutions of the thermoelastic problem of the thick-walled tube( Book )

1 edition published in 1958 in English and held by 1 WorldCat member library worldwide

The stress distribution in a thick-walled, circular cylindrical tube subjected to a steadystate temperature gradient across the tube wall is calculated, taking into account the variation with temperature of the elastic and thermal properties of the material. The calculations are made by 5 methods: (1) by electronic digital computer; (2) by assuming an incompressible material; (3) by assuming a temperatureindependent material and using the average properties of the material; (4) by using the weighted-average properties of the material; and (5) by using a higher order approximation. Good agreement is found when high temperature levels do not persist over large portions of the tube. When the latter is the case, only Method 5 gives better than a qualitative picture of the stress distribution. (Author)
 
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Languages
English (12)