Results 41 to 50 of about 1,478 (268)

The stress-strain state of ribbed shell structures

open access: yesИнженерно-строительный журнал, 2017
The paper presents an analysis of the stress-strain state of shallow shell structures of double curvature, reinforced from the concave side by a various number of stiffeners.
Vladimir Karpov   +2 more
doaj   +1 more source

Targeting Post‐Irradiation Thyroid Dysfunction: Electrospun Scaffolds As A Dual‐Action Approach for Antioxidant and Immune Modulation

open access: yesAdvanced Healthcare Materials, EarlyView.
Radiation‐induced hypothyroidism follows head and neck radiotherapy due to oxidative stress and inflammation. Electrospun polycaprolactone scaffolds containing adenosine have potential to modulate thyroid repair. Scaffolds enhance thyrocyte proliferation, antioxidant enzymes glutathione peroxidase and catalase, reduce senescence and apoptosis markers ...
Maria Heim   +5 more
wiley   +1 more source

Nonlinear static and dynamic analysis of composite layered plates and shells using finite strip methods [PDF]

open access: yes, 2003
In this thesis, a new concept of finite strip elements is introduced. Lagrangian, Hermitian and spline-type interpolations have been used independently along the two axes of the plate mid-plane.
Razzaq, Raja Javed
core  

Minimum cost design of ring and stringer stiffened cylindrical shells

open access: yesComputer Assisted Methods in Engineering and Science, 2023
In this paper the optimum design of bent cylindrical shells with welded ring or stringer stiffeners are treated. The objective function is the cost of the structure and the constraints are related to overall and local stability. The problem is solved by
Tamás Liszkai, József Farkas
doaj  

Nonlinear vibration of functionally graded material sandwich doubly curved shallow shells reinforced by FGM stiffeners. Part 2: Numerical results and discussion

open access: yesVietnam Journal of Mechanics, 2017
In part 1, the governing nonlinear dynamic equations of FGM sandwich doubly curved shallow shells reinforced by FGM stiffeners on elastic foundation subjected to mechanical and thermal loading are established based on the first order shear deformation ...
Dang Thuy Dong, Dao Van Dung
doaj   +1 more source

Multidisciplinary design optimization of non-uniform stiffened cylindrical shells

open access: yesZhongguo Jianchuan Yanjiu, 2021
ObjectivesUnderwater structures have strict requirements for intensity, mass, vibration, noise and so on. From a multidisciplinary perspective, realizing the design optimization of such structures to improve their overall performance is of great ...
Jingru LI, Jiang LIU, Sheng LI
doaj   +1 more source

Analysis of optimization characteristics of titanium alloy double layer stiffened cylindrical shell structure under different design requirements

open access: yesZhongguo Jianchuan Yanjiu
ObjectiveIn order to explore the characteristics of optimization design schemes of titanium alloy double layer stiffened cylindrical shell structures under different length-to-diameter ratios and calculation pressures, a mathematical model for the ...
Shiqiang LI   +4 more
doaj   +1 more source

Modulus‐Switchable Miniature Robots for Biomedical Applications: A Review

open access: yesAdvanced Robotics Research, EarlyView.
Materials, robot designs, proof‐of‐concept functions, and biomedical applications of modulus‐switchable miniature robots. Miniature soft robots have shown great potential in biomedical applications due to their excellent controllability and suitable mechanical properties in biological environments.
Chunyun Wei, Yibin Wang, Jiangfan Yu
wiley   +1 more source

Experimental Study on Small-Scale Shake Table Testing of Cable-Stiffened Single-Layer Spherical Latticed Shell

open access: yesBuildings
The cable-stiffened single-layer latticed shell is an innovative structural design that achieves a perfect balance between lightweight and stability by combining cables and a latticed shell. However, the study on dynamic response and failure mechanism of
Ying Zhao   +7 more
doaj   +1 more source

A Soft Robotic Fish With a Dielectric Elastomer Actuator Body and Negative Stiffness Spine

open access: yesAdvanced Robotics Research, EarlyView.
This work introduces a bio‐mimetic soft robotic fish driven by fiber‐reinforced dielectric elastomer actuators integrated as its body. By prestretching this active skin against a flexible spine, a negative stiffness system is created, enabling large‐amplitude bending.
Markus Koenigsdorff   +4 more
wiley   +1 more source

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