vibration analysis

[gladem]

looking for a good approximate method for analyzing foundation for vibrating equipment on soil. specifically resonant frequencies and amplitudes. anyone know of a good reference on the above

 

[Qshake]

One of the best references that i am aware for this subject is Soil dynamics by Prakash. There is an entire chapter dedicated to machine foundations.

 

[xpert]

You can use rule of thumb such as:
weight of footing / weight of machine = 2 -5 depending on the type of machine (centrifugal or receprocating).

Alternatively, you can perform a detailed dynamic analysis of a footing using British Standards CP???? sorry the number escapes me at present.

There is also a textbook by Suresh and Arya on the topic.

HTH!

 

[xpto]

I use the books "Dynamics in Civil Engineering" ( 5 vol. ) by Alexander Major and "Analysys and Desgin of Foundations for Vibrations", by P. J. Moore, both from A. A. Balkema ed.

 

[deepikajangra]

references:
Novak,M. State of the art in analysis and Design Of Machine Foundations,Soil structure interaction.Elsevier Science Publications,1987:171-192

Gazetas,G. Analysis of ,machine Foundation Vibrations:State of art,soil Dynamics and Eartiquake Engineering.CML Publications,Vol.2.1.1983:2-42

Design of machine foundations by SRINIVASALLU djangra

 

[falp]

If you would like to isolate the vibrations you have a simple way presented in pages 46 to 52 of book Dynamic of Structures, Ray W. Clough and Joseph Penzien, McGraw-Hill editions

 

[strucsearch]

can we locate degree of bond of Anchor bolts embedded in machine foundations made of reinforcered cement concrete

 

[RiBeneke]

Shear strength parallel to the bolt according to the strength of the concrete and the bonding material (such as epoxy).
Tensile force on the bolt also limited by the cone fracture strength of the concrete, and influenced by any steel reinforcement in the concrete.
Hilti and Ramset and others have design data.