Related Experiment Video
Updated: Jan 1, 2026
14:57
Structural Design and Manufacturing of a Cruiser Class Solar Vehicle
Published on: January 30, 2019
14.3K
Optimal Design of Plated/Shell Structures under Flutter Constraints-A Literature Review
Aleksander Muc1, Justyna Flis1, Marcin Augustyn1
1Institute of Machine Design, Cracow University of Technology, 31-864 Cracow, Poland.
Materials (Basel, Switzerland)
|December 19, 2019
Summary
This review explores aeroelastic optimization for plated/shell structures, focusing on composite materials like laminates, sandwich structures, and functionally graded materials for improved divergence and flutter characteristics.
Area of Science:
- Structural engineering
- Aerospace engineering
- Materials science
Background:
- Aeroelastic optimization is crucial for evaluating divergence and flutter in plated/shell structures.
- Composite materials offer advanced properties for structural design.
Purpose of the Study:
- To review fundamental trends and dominant approaches in aeroelastic optimization.
- To focus on objective functions and material variables for composite structures.
Main Methods:
- Literature review of aeroelastic optimization techniques.
- Analysis of composite material formulations (laminates, sandwich, FGMs, piezoelectric).
Main Results:
- Identified key trends in aeroelastic optimization.
- Detailed examination of material variable definitions for advanced composites.
- Discussion of original aspects in composite structure optimization.
Conclusions:
- Aeroelastic optimization is essential for structural integrity.
- Advanced composite materials present unique challenges and opportunities in optimization.
- Further research into novel composite structures is warranted.
Related Concept Videos
01:22Design Consideration
491
Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key...
The factor of safety is another key...
491
01:23Design of Prismatic Beams for Bending
568
The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and...
568
01:18Stress Concentrations in Circular Shafts
466
Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...
466
01:24Stress Concentrations
570
Stress concentration is when stress intensifies near discontinuities such as holes or abrupt cross-sectional changes in a structural member. This localized stress can often surpass the average stress within the member. The stress distribution in flat bars, either with a circular hole or varying widths connected by fillets, can be determined experimentally using a photoelastic method. The results are based on ratios of geometric parameters like the ratio of the hole's radius to the smaller...
570
01:13Stress Concentrations
538
The concept of stress concentration is crucial for understanding how materials respond under bending stresses, particularly when there are irregularities or discontinuities in the material's geometry. Normally, stress in a symmetric member subjected to pure bending is assumed to be uniformly distributed across the entire cross-section. However, this assumption does not hold when there are variations in the cross-sectional geometry or the presence of notches and holes.
The stress...
The stress...
538
01:05Fluid Pressure over Flat Plate of Constant Width
2.4K
When a body is submerged in water, it experiences fluid pressure acting normal on its surface and distributed over its area. For better design structures, it is crucial to determine the magnitude and location of the resultant force acting on the surface. In the case of a rectangular plate of constant width submerged in water, the pressure increases with depth, resulting in a linearly varying trapezoidal pressure distribution from the upper to the lower edge of the plate.
The resultant force...
The resultant force...
2.4K