Search | Engineering

Subscribe Submit

Home Journals Focus Achievement Fronts About Us 中文版

Resource Type

Journal Article 964

Conference Videos 8

Year

2023 68

2022 80

2021 66

2020 71

2019 47

2018 41

2017 42

2016 40

2015 49

2014 43

2013 38

2012 41

2011 34

2010 46

2009 44

2008 36

2007 34

2006 29

2005 26

2004 20

open ︾

Keywords

model 15

model test 15

numerical simulation 15

mathematical model 14

kinetic model 10

COVID-19 7

uncertainty 7

Deep learning 6

optimization 6

sensitivity analysis 6

constitutive model 5

China 4

Machine learning 4

development model 4

numerical model 4

sustainable development 4

FEM 3

artificial neural network 3

dynamic model 3

open ︾

Search scope:

排序： Display mode:

Landing control method of a lightweight four-legged landing and walking robot

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0707-1

Abstract: A lightweight four-legged landing and walking robot called “FLLWR” is designed in this study.A landing control method via compliance control is proposed to solve the critical problem of impact energydissipation to realize buffer landing.Repetitive landing experiments on a five-degree-of-freedom lunar gravity testing platform are performedUnder the landing conditions with a vertical velocity of 2.1 m/s and a loading weight of 140 kg, the

Keywords： landing and walking robot lunar exploration buffer landing compliance control

HTML PDF Collect

Modeling and analysis of landing collision dynamics for a shipborne helicopter

Dingxuan ZHAO, Haojie YANG, Carbone GIUSEPPE, Wenhang LI, Tao NI, Shuangji YAO

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1, Pages 151-162 doi: 10.1007/s11465-020-0617-z

Abstract: A Lagrange dynamic model is established based on small-angle approximation to improve the simulationmodel for shipborne helicopter landing collision.To describe fuselage motion effectively, the proposed model considers ship motion, the interaction ofResults show that the proposed dynamic model can simulate the collision motion of helicopter landingSeveral suggestions for helicopter pilot landing are likewise provided.

Keywords： shipborne helicopter landing model Lagrange equations dynamics validation

HTML PDF Collect

Opinion on Space Launch and Manned Lunar-landing

Zhang Zeming ,Jiang Yi ,Fu Debin

Strategic Study of CAE 2006, Volume 8, Issue 10, Pages 37-41

Abstract:

The lunar-landing is the continuation of manned spaceflight engineering.

Keywords： lunar-landing space launch launch platform lunar-landing orbit technical route

HTML PDF Collect

Estimation of fatigue damage of airplane landing gear

LIU Ke-ge, YAN Chu-liang, ZHANG Shu-ming

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4, Pages 424-428 doi: 10.1007/s11465-006-0051-x

Abstract: Taking the main landing gears of fighter and transport airplanes as examples, the fatigue life was estimatedThe computed results show that the landing damage to the fighter and transport airplanes is 75% and 60%of the total damage, and the damage caused by the landing stroke is 40% of the landing-gear damage.

HTML PDF Collect

Planar jumping with stable landing through foot orientation design and ankle joint control

Qilong YUAN, I-Ming CHEN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2, Pages 100-108 doi: 10.1007/s11465-012-0318-3

Abstract: In this work, through determining the upper body posture trajectory in the flight phase, the foot landingposture is made to be flat while landing.Together with properly designing the trajectory for local center of gravity and the foot landing velocity, the soft landing trajectory is generated.Jumping motion with stable landing is achieved in a dynamic simulation environment based on this method

Keywords： biped jumping stable landing control jumping motion generation

HTML PDF Collect

The Present Situation and Prospect of China's Space-entering Capacity

Long Lehao,Wang Xiaojun,Guo Linli

Strategic Study of CAE 2006, Volume 8, Issue 11, Pages 25-28

Abstract: rockets that can be launched quickly and flexibly; developing launching vehicles capable of manned lunar landing

Keywords： space activities “Long-March” rocket family manned lunar landing reusable launching vehicles

HTML PDF Collect

Survey of autonomous guidance methods for powered planetary landing Review

Zheng-yu Song, Cong Wang, Stephan Theil, David Seelbinder, Marco Sagliano, Xin-fu Liu, Zhi-jiang Shao,zycalt12@sina.com

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 5, Pages 649-808 doi: 10.1631/FITEE.1900458

Abstract: ., the lunar, Mars, and Earth landing.Three key issues related to AGM application, including physical feasibility, model accuracy, and real-time

Keywords：自主制导方法；定点软着陆；动力下降；非线性规划

HTML PDF Collect

Watt Linkage–Based Legged Deployable Landing Mechanism for Reusable Launch Vehicle: Principle, Prototype Article

Haitao Yu,Baolin Tian,Zhen Yan,Haibo Gao,Hongjian Zhang,Huiqiang Wu,Yingchao Wang,Yuhong Shi,Zongquan Deng

Engineering 2023, Volume 20, Issue 1, Pages 120-133 doi: 10.1016/j.eng.2022.05.015

Abstract: The landing mechanism, which provides landing support and impact absorption, is a vital component ofThis study proposes a novel legged deployable landing mechanism (LDLM) for RLV.To endow the proposed LDLM with advantages of large landing support region, lightweight, and reasonable

Keywords： Reusable launch vehicle (RLV) Deployable mechanism Optimization design

HTML PDF Collect

Standard model of knowledge representation

Wensheng YIN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 3, Pages 275-288 doi: 10.1007/s11465-016-0372-3

Abstract: methods include predicate logic, semantic network, computer programming language, database, mathematical modelintrinsic link between various knowledge representation methods, a unified knowledge representation modelAccording to ontology, system theory, and control theory, a standard model of knowledge representationThe model is composed of input, processing, and output.In addition, the standard model of knowledge representation provides a way to solve problems of non-precision

Keywords： knowledge representation standard model ontology system theory control theory multidimensional representation

HTML PDF Collect

Zhang Zhengyan: Pre Training Language Model Integrating Knowledge (2020-4-3)

18 Apr 2022

Keywords：工程管理

State of the Art of Compartment Fire Modeling

Zheng Xin,Yuan Hongyong

Strategic Study of CAE 2004, Volume 6, Issue 3, Pages 68-74

Abstract: The relevant underlying physical assumptions are presented first and the conventional model performance

Keywords： compartment field model zone model network model FZN (field zone and network) model empirical model

HTML PDF Collect

Elevated temperature creep model of parallel wire strands

Frontiers of Structural and Civil Engineering Pages 1060-1071 doi: 10.1007/s11709-023-0981-y

Abstract: analyze their creep behavior, this study experimentally investigated the elevated temperature creep modelThe parameters in the general empirical formula, the Bailey–Norton model, and the composite time-hardeningmodel were fitted based on the experimental results.By evaluating the accuracy and form of the models, the composite time-hardening model, which can simultaneously

Keywords： parallel wire strands experimental study elevated temperature creep model

HTML PDF Collect

Impact of crude distillation unit model accuracy on refinery production planning

Gang FU, Pedro A. Castillo CASTILLO, Vladimir MAHALEC

Frontiers of Engineering Management 2018, Volume 5, Issue 2, Pages 195-201 doi: 10.15302/J-FEM-2017052

Abstract: In this work, we examine the impact of crude distillation unit (CDU) model errors on the results of refinery-wideWe compare the swing cut+ bias CDU model with a recently developed hybrid CDU model (Fu et al., 2016)The hybrid CDU model computes material and energy balances, as well as product true boiling point (TBPCase studies of optimal operation computed using a planning model that is based on the swing cut+ biasCDU model and using a planning model that incorporates the hybrid CDU model are presented.

Keywords： impact of model accuracy on production planning swing cut+ bias CDU model hybrid CDU model refinery feedstock

HTML PDF Collect

Test-driven verification/validation of model transformations

László LENGYEL,Hassan CHARAF

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 2, Pages 85-97 doi: 10.1631/FITEE.1400111

Abstract: Why is it important to verify/validate model transformations?Verified/validated model transformations make it possible to ensure certain properties of the generatedFor example, a verified/validated model transformation can ensure the preservation of certain propertiesduring the model-to-model transformation.of a novel test-driven method for verifying/validating model transformations.

Keywords： Graph rewriting based model transformations Verification/validation Test-driven verification

HTML PDF Collect

Digital twin-assisted gearbox dynamic model updating toward fault diagnosis

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-023-0748-0

Abstract: One of the core challenges of intelligent fault diagnosis is that the diagnosis model requires numerousGenerating training data using a virtual model is a potential solution for addressing such a problem,and the construction of a high-fidelity virtual model is fundamental and critical for data generationIn this study, a digital twin-assisted dynamic model updating method for fault diagnosis is thus proposedhelical gearbox; the virtual data generated by this model can be used for gear fault diagnosis.

Keywords： digital twin gearbox model construction model updating physical–virtual interaction