VISCEL, a general-purpose computer program for analysis of linear viscoelastic structures. Volume 1 - User's manual

VISCEL computer program user manual for analysis of linear viscoelastic structure

VISCEL: A general-purpose computer program for analysis of linear viscoelastic structures (user's manual), volume 1

This program, an extension of the linear equilibrium problem solver ELAS, is an updated and extended version of its earlier form (written in FORTRAN 2 for the IBM 7094 computer). A synchronized material property concept utilizing incremental time steps and the finite element matrix displacement approach has been adopted for the current analysis. A special option enables employment of constant time steps in the logarithmic scale, thereby reducing computational efforts resulting from accumulative material memory effects. A wide variety of structures with elastic or viscoelastic material properties can be analyzed by VISCEL. The program is written in FORTRAN 5 language for the Univac 1108 computer operating under the EXEC 8 system. Dynamic storage allocation is automatically effected by the program, and the user may request up to 195K core memory in a 260K Univac 1108/EXEC 8 machine. The physical program VISCEL, consisting of about 7200 instructions, has four distinct links (segments), and the compiled program occupies a maximum of about 11700 words decimal of core storage

Pressure seal Patent

Pressure seals suitable for use in environmental test chamber

First record of Pseudomaro aenigmaticus (Araneae: Linyphiidae) and further records of Philodromus praedatus (Araneae: Philodromidae) in Switzerland

Im Rahmen des laufenden Nationalfondsprojekts "Der Beitrag von Waldrandökotonstrukturen zur regionalen Biodiversität" konnte in der Schweiz erstmals Pseudomaro aenigmaticus DENIS, 1966 (Linyphiidae) nachgewiesen werden. Weiter wurde auch Philodromus praedatus O.P.-CAMBRIDGE, 1871 (Philodromidae) festgestellt, eine Spezies, von der bisher erst drei schweizerische Funde vorliegen. ..

What Agriculture Is Up Against

Has agriculture itself built all of its present predicament? With so many proposals being made and the time for action coming closer, here\u27s a review of some of the outside forces and their impact on farming

Behind the Cost-Price Squeeze

This article is intended to aid in understanding the present farm situation in relation to the rest of our national economy. It\u27s difficult to solve a problem without understanding underlying factors behind it

Facing Up to the Cost-Price Squeeze

The fact of the cost-price squeeze is already with us. Can we face up to the real causes and possible answers? Some are hard to face and not easy to solve. Can we face up to the squeeze in both fact and thought

How harmonic is dipole resonance of metal clusters?

We discuss the degree of anharmonicity of dipole plasmon resonances in metal clusters. We employ the time-dependent variational principle and show that the relative shift of the second phonon scales as $N^{-4/3}$ in energy, $N$ being the number of particles. This scaling property coincides with that for nuclear giant resonances. Contrary to the previous study based on the boson-expansion method, the deviation from the harmonic limit is found to be almost negligible for Na clusters, the result being consistent with the recent experimental observation.Comment: RevTex, 8 page