Results 31 to 40 of about 80,742 (298)

Dynamics of a split torque helicopter transmission [PDF]

, 1992
A high reduction ratio split torque gear train has been proposed as an alternative to a planetary configuration for the final stage of a helicopter transmission. A split torque design allows a high ratio of power-to-weight for the transmission.
Krantz, Timothy, Rashidi, Majid
core   +2 more sources

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Consideration of the restriction of lateral contraction in the elastic behaviour of cohesive zone models

, 2015
Cohesive zone models do not consider the lateral contraction of adhesive layers under tensile loads. The constraint of the lateral contraction by the adherents which depends on the geometry of the adhesive layer has a major influence on the normal ...
Hesebeck, Olaf
core   +1 more source

Enhanced goal-oriented error assessment and computational strategies in adaptive reduced basis solver for stochastic problems [PDF]

, 2017
This work focuses on providing accurate low-cost approximations of stochastic ¿nite elements simulations in the framework of linear elasticity.
Almeida, Babuška, Betz, Bianchini, Boyaval, Boyaval, Boyaval, Chen, Cirak, Feng, Fishman, Florentin, Giraldi, Grigoriu, Huynh, Karhunen, Ladevèze, Ladevèze, Ladevèze, Mohan, Nadal, Nguyen, Nouy, Paraschivoiu, Parés, Phoon, Phoon, Sachdeva, Schuëller, Stavroulakis, Stefanou, Verdugo, Zhu   +32 more
core   +4 more sources

Dynamic Analysis of Gear Systems with Dynamic Mesh Stiffness and Time- Varying Bearing Stiffness

Nonlinear Dynamics
Abstract In this study, a novel analytical model for dynamic mesh stiffness of spur gears is developed using variable cross-section beam theory, explicitly accounting for driving speed effects. The dynamic mesh stiffness is determined by applying the modal superposition method to analytical model equations, and subsequently validated using both
Lili Zhang, Dayi Qu, Hanjun Jiang, Fuhao Liu, Meng Rao, Chao Ye, Baogang Li, Hao Wu, Delong Shao   +8 more
openaire   +1 more source

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

Advanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai, Xinrui Sarah Niu, Zhao Qin   +2 more
wiley   +1 more source

Time-varying mesh stiffness of gears under interfacial characteristic effects

Advances in Engineering Research Possibilities and Challenges
To investigate the variation characteristics of gear time-varying mesh stiffness under asperity-dominated contact, utilizing the geometric relationship formula for double-tooth engagement and surface topography, the fractal theory was employed to describe the gear profile.
Hao Wu, Hanjun Jiang, Delong Shao
openaire   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

Effective Width of Floor Systems for Application in Seismic Analysis [PDF]

, 1980
Effective width coefficients for floor systems have been developed for use in the analysis of frames subjected to lateral seismic loads. The results cover a wide range of the governing nondimensional parameters, and are applicable to floor slabs with ...
Coctran, F.S., Hall, W.J.
core  

Numerical evaluation of the pipe-pile buckling during vibratory driving in sand [PDF]

, 2019
The buckling of steel pipe piles during vibratory driving is numerically studied using the Multi-Material Arbitrary Lagrangian-Eulerian (MMALE) method. This method handles the large soil deformations that occur during pile driving and other geotechnical ...
Aubram, Daniel, Bakroon, Montaser, Daryaei, Reza, Rackwitz, Frank   +3 more
core   +1 more source