Ensoft DynaN v3.0

A powerful computer program should be founded on advanced theory and be

verified by tests and practice. The DYNAN program follows these

guidelines. DYNAN is based on the improved Novaks method where a

non-reflective boundary is formed between the near field and the far

field to account for the mass of soil in the boundary. The program yields

the dynamic response of both shallow and deep foundations under harmonic

transient, and random loadings. Such loadings can be produced by rotating

or reciprocating machines, earthquake, wind, blast, sea waves, and other sources






The foundations (or caps on piles) are assumed to be rigid, and all six

degrees of freedom are considered as coupled. The foundation stiffness

and damping constants are also returned for possible use in

soil-structure interaction analysis

The stiffness of the supporting soil along with damping constants needed

for the analysis and evaluated in the program for surface foundations

embedded foundations, and pile foundations. Soil layering, a possible

weakened zone (see sketch) around a foundation, and pile-soil-pile

interaction are all taken into account

The computational method has been applied to important engineering

practice (Han, 1987, and Han, et al, 1999). To investigate soil-structure

interaction, a series of dynamic experiments were performed on full-scale

mat foundations (Han, 1989) and on full-scale piles (Han and Novak, 1989

1992). The elastic wave energy from foundation vibration was dissipated

in three dimensions as radiation damping. The soil is not a perfect

elastic medium as assumed in the theory and the experiments showed that

damping is overestimated in the computation. For practical purposes, the

damping is reduced in DYNAN based on experimental results



DYNAN can be used for the dynamic analysis under transient and random

loading in the time domain. It also can be used for harmonic loading in

the frequency domain. By means of a substructure method, the dynamic

response of superstructure is calculated using a finite element program

such as SAP2000, and the stiffness and damping of foundation are

generated using the DYNAN program


Release Date: 2018-04-29 Disks: 03

Protection: Hardlock Release Type: Application

Requirements: RELEASE DESCRIPTION


12.5MB

Download
http://s11.alxa.net/s11/srvs14/001/3...DynaN.v3.0.rar