Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Bending of Members Made of Several Materials01:08

Bending of Members Made of Several Materials

138
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
138
Plastic Deformations01:14

Plastic Deformations

81
It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
81
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity01:15

Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity

246
Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
246
Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

86
When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
86
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving01:29

Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving

38
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
38
Design of Prismatic Beams for Bending01:23

Design of Prismatic Beams for Bending

204
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...
204

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Confidence-supported label-free metabolic imaging with FPhaS phase autofluorescence microscopy.

bioRxiv : the preprint server for biology·2026
Same author

Advanced drug delivery platforms targeting cellular senescence: A promising strategy for cancer therapy.

Acta pharmaceutica Sinica. B·2026
Same author

Observations of polycyclic aromatic hydrocarbons at Changbai Mountain in Northeast Asia: Characteristics, transboundary transport, and health impacts.

Journal of environmental sciences (China)·2026
Same author

MMA++: Effective Multi-Modal Adaptation for Vision-Language Models.

IEEE transactions on pattern analysis and machine intelligence·2026
Same author

A foundation model-enhanced CT radiomics signature for the noninvasive assessment of tertiary lymphoid structures and prediction of therapy benefit in gastric cancer.

Cancer biology & medicine·2026
Same author

Seasonal and diurnal variabilities of secondary organic aerosol in coastal and inland cities, north China: Impact of anthropogenic emission.

Environmental pollution (Barking, Essex : 1987)·2026

Related Experiment Video

Updated: May 31, 2025

Structural Design and Manufacturing of a Cruiser Class Solar Vehicle
14:57

Structural Design and Manufacturing of a Cruiser Class Solar Vehicle

Published on: January 30, 2019

13.7K

Ply Optimization of Composite Laminates for Processing-Induced Deformation and Buckling Eigenvalues Based on Improved

Qingchuan Liu1, Xiaodong Wang1, Zhidong Guan1

  • 1School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China.

Materials (Basel, Switzerland)
|January 25, 2025
PubMed
Summary

This study optimized composite laminate structures to reduce manufacturing defects like spring-in angles and improve buckling resistance. An improved adaptive genetic algorithm (IAGA) significantly enhanced structural performance and manufacturability.

Keywords:
finite element analysisgenetic algorithmprocess simulationprocessing-induced deformation

More Related Videos

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates
07:53

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates

Published on: April 27, 2019

8.2K
Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process
09:54

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process

Published on: June 30, 2023

2.0K

Related Experiment Videos

Last Updated: May 31, 2025

Structural Design and Manufacturing of a Cruiser Class Solar Vehicle
14:57

Structural Design and Manufacturing of a Cruiser Class Solar Vehicle

Published on: January 30, 2019

13.7K
Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates
07:53

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates

Published on: April 27, 2019

8.2K
Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process
09:54

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process

Published on: June 30, 2023

2.0K

Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Computational Mechanics

Background:

  • Composite laminated plates and stiffened panels exhibit thermal residual stresses and processing-induced deformations (PIDs) due to varied ply orientations.
  • Geometric features and ply orientation mismatches in stiffened panels exacerbate PIDs, impacting structural integrity.
  • Mitigating these issues is crucial for enhancing the performance and manufacturability of composite structures.

Purpose of the Study:

  • To propose and validate a multi-objective stacking optimization strategy using an improved adaptive genetic algorithm (IAGA).
  • To minimize processing-induced deformations (PIDs), specifically the spring-in angle, in L-shaped stiffeners of composite laminated structures.
  • To enhance the structural performance, particularly buckling resistance, of composite stiffened panels.

Main Methods:

  • Employed a viscoelastic constitutive model to accurately simulate modulus variations during the curing process.
  • Developed and applied an improved adaptive genetic algorithm (IAGA) for multi-objective optimization of ply-stacking sequences.
  • Optimized the ply-stacking sequence for L-shaped stiffeners in composite laminated structures.

Main Results:

  • Achieved a significant reduction in the spring-in angle to 0.12°, a 50% improvement over symmetric balanced designs.
  • Enhanced buckling eigenvalues by 20% through optimized stacking sequences.
  • Demonstrated IAGA's superiority over NSGA, with a threefold increase in Pareto solution diversity and a 70% reduction in convergence time.

Conclusions:

  • Asymmetric ply design is effective in mitigating residual stresses and PIDs in composite stiffened panels.
  • The proposed IAGA provides a robust and efficient framework for optimizing composite laminate structures.
  • The findings contribute to improved structural performance and manufacturability of advanced composite materials.