Experimental Modal Analysis and Model Validation of Antenna Structures
Numerical design optimization is a powerful tool that
can be used by engineers during any stage of the design process.
There are many different applications for structural optimization. A
specific application that will be discussed in the following paper is
experimental data matching. Data obtained through tests on a physical
structure will be matched with data from a numerical model of that
same structure. The data of interest will be the dynamic characteristics
of an antenna structure focusing on the mode shapes and modal
frequencies. The structure used was a scaled and simplified model of
the Karoo Array Telescope-7 (KAT-7) antenna structure.
This kind of data matching is a complex and difficult task. This
paper discusses how optimization can assist an engineer during the
process of correlating a finite element model with vibration test data.
[1] C. Mundt and G. Quinn, Test-analysis correlation with design optimisation,
Long Beach Convention Center, Long Beach, CA, 2005.
[2] L. Schmit and H. Miura, Approximation concepts for efficient structural
synthesis. NASA CR-2552, 1976.
[3] Genesis design manual, version 10.1, Vanderplaats Research and Development,
Inc, Colorado Springs, 2008.
[4] J. Leiva, Topometry optimization: a new capability to perform element by
element sizing optimization of structures, 2nd ed. MI, USA: Vanderplaats
Research and Development, Inc, 2008.
[5] Ready to host the SKA, SKA South Africa, Johannesburg, South Africa,
2008.
[6] KAT-7 antenna structure design and analysis, MMS Technology (Pty)Ltd,
Centurion, RSA, 2008.
[7] D. Ewins, Modal Testing: Theory and Practise, 2nd ed. Research Studies
Press Ltd, 1984.
[8] D. Inman, Engineering Vibration, 2nd ed. Prentice Hall International,
Inc, 2001.
[1] C. Mundt and G. Quinn, Test-analysis correlation with design optimisation,
Long Beach Convention Center, Long Beach, CA, 2005.
[2] L. Schmit and H. Miura, Approximation concepts for efficient structural
synthesis. NASA CR-2552, 1976.
[3] Genesis design manual, version 10.1, Vanderplaats Research and Development,
Inc, Colorado Springs, 2008.
[4] J. Leiva, Topometry optimization: a new capability to perform element by
element sizing optimization of structures, 2nd ed. MI, USA: Vanderplaats
Research and Development, Inc, 2008.
[5] Ready to host the SKA, SKA South Africa, Johannesburg, South Africa,
2008.
[6] KAT-7 antenna structure design and analysis, MMS Technology (Pty)Ltd,
Centurion, RSA, 2008.
[7] D. Ewins, Modal Testing: Theory and Practise, 2nd ed. Research Studies
Press Ltd, 1984.
[8] D. Inman, Engineering Vibration, 2nd ed. Prentice Hall International,
Inc, 2001.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:60933", author = "B.R. Potgieter and G. Venter", title = "Experimental Modal Analysis and Model Validation of Antenna Structures", abstract = "Numerical design optimization is a powerful tool that
can be used by engineers during any stage of the design process.
There are many different applications for structural optimization. A
specific application that will be discussed in the following paper is
experimental data matching. Data obtained through tests on a physical
structure will be matched with data from a numerical model of that
same structure. The data of interest will be the dynamic characteristics
of an antenna structure focusing on the mode shapes and modal
frequencies. The structure used was a scaled and simplified model of
the Karoo Array Telescope-7 (KAT-7) antenna structure.
This kind of data matching is a complex and difficult task. This
paper discusses how optimization can assist an engineer during the
process of correlating a finite element model with vibration test data.", keywords = "Finite Element Model (FEM), Karoo Array Telescope(KAT-7), modal frequencies, mode shapes, optimization,shape optimization, size optimization, vibration tests", volume = "3", number = "11", pages = "1419-5", }