Effect of Twist Angle and RPM on the Natural Vibration of Composite Beams Made up of Hybrid Laminates

  • Rakesh PotluriEmail author
  • V. Diwakar
  • K. Venkatesh
  • R. Sravani
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


Rotating beams are crucial components that have a wide range of application in the aerospace and mechanical engineering fields. Some of the applications of the rotating composite beams include the helicopter blades, wind turbine blades, and propellers but rather than having a straight beam they are generally twisted which gives some added advantage to them. Having a good understanding of their behaviour, especially the natural frequencies of the structure, is crucial for designing a very good structure. In this paper, the effect of the pre-twist angle, rotation speed on the natural vibration behaviour of the rotating composite beams made up of a hybrid laminate was studied. A comparison between the natural frequencies and mode shapes of the composite beam with and without rotation and pre-twist effects was performed. The hybrid laminate was designed and properties of the laminate were found using the CLT theory, executed in the MATLAB software. Finite element analysis (FEA) was used for performing this work using the ANSYS Workbench software.


Rotating beams Modal frequencies Hybrid laminate Twist angle RPM (revolutions per Minute) FEA (finite element analysis) 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Rakesh Potluri
    • 1
    Email author
  • V. Diwakar
    • 2
  • K. Venkatesh
    • 3
  • R. Sravani
    • 3
  1. 1.DVR & Dr HS MIC College of TechnologyKanchikacherla, Krishna Dt.India
  2. 2.Department of Mechanical Engineering, DIETKrishna Dt.India
  3. 3.Department of Mechanical EngineeringGCETHyderabadIndia

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