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Related Concept Videos

Wind Turbine Machine Models01:24

Wind Turbine Machine Models

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In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
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Design Example: Calculating Safe Diameter for Wind-Exposed Disc01:17

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Assessing safety in wind-exposed installations is crucial to preventing potential failures. This example explores the calculation and design adjustments needed to mount a circular disc on a building facade, where wind forces are a primary concern. A 4-meter diameter disc was initially designed as an aesthetic feature facing winds at a velocity of 25 meters per second, with an air density of 1.25 kilograms per cubic meter. Given these conditions, the drag force on the disc was determined using...
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Design of Transmission Shafts - Stress Analysis01:15

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Designing a transmission shaft requires a thorough understanding of the stresses induced by bending moments and torques, especially in systems where power is transferred through gears. These forces create force-couple systems at the centers of the shaft's cross-sections, leading to both transverse and torsional loading. Although shearing stresses from transverse loads are typically smaller than those from torques and are often overlooked, the significant normal stresses from these loads...
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Design of Transmission Shafts01:16

Design of Transmission Shafts

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The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by...
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Unsymmetric Loading of Thin-Walled Members: Problem Solving01:07

Unsymmetric Loading of Thin-Walled Members: Problem Solving

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The shear center of a channel section with uniform thickness, height, and width, is determined by computing the shear force in the member and calculating the moments of inertia of the sections.
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A composite body is a body made up of multiple parts, connected to form a larger, unified object. Each part has its own weight and center of gravity, which must be considered to determine the center of gravity of the composite body. In cases where the density or specific weight is constant, the center of gravity coincides with the centroid.
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Updated: Jun 20, 2025

Structural Design and Manufacturing of a Cruiser Class Solar Vehicle
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Structural optimization using a genetic algorithm aiming for the minimum mass of vertical axis wind turbines using

Peng Xue1, Yi Wan1, Jun Takahashi1

  • 1Department of Systems Innovation, The University of Tokyo, Hongo 7-3-1, Bunkyo-Ku, Tokyo, 113-8656, Japan.

Heliyon
|July 18, 2024
PubMed
Summary
This summary is machine-generated.

This study optimized Vertical Axis Wind Turbine (VAWT) structures using Finite Element Analysis (FEA) and Genetic Algorithms (GA). Carbon Fiber Reinforced Plastics (CFRP) blades showed significant mass reduction compared to Glass Fiber Reinforced Plastics (GFRP).

Keywords:
FEMGenetic algorithmRecycled-CFRPStructure optimizationVertical axis wind turbine

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Area of Science:

  • Renewable Energy Engineering
  • Structural Optimization
  • Materials Science

Background:

  • Designing Vertical Axis Wind Turbine (VAWT) blades is challenging due to complex structures and diverse materials.
  • Optimizing VAWT designs is crucial for improving efficiency and reducing manufacturing costs.

Purpose of the Study:

  • To develop a structural optimization framework for VAWTs.
  • To minimize the mass of VAWT structures while satisfying complex constraints.
  • To quantify mass reduction based on material selection and structural design.

Main Methods:

  • Integration of a parametric Finite Element Analysis (FEA) model for simulating global structural behavior.
  • Application of a Genetic Algorithm (GA) optimization technique to explore the design domain.
  • Systematic evaluation of different material choices and structural configurations.

Main Results:

  • The optimization framework successfully identified optimal design parameters for VAWT structures.
  • Blades made from Carbon Fiber Reinforced Plastics (CFRP) were 47.1% lighter than those made from Glass Fiber Reinforced Plastics (GFRP).
  • Structural components using optimized designs and materials were 44.8% lighter.

Conclusions:

  • The developed framework effectively reduces VAWT structural mass through optimized design and material selection.
  • CFRP offers substantial weight savings for VAWT blades compared to GFRP.
  • Recommendations for future studies include incorporating more load cases and detailed component designs.