Mechanical design method for operability based on modeling of hydraulic system and experimental study of operation mechanisms

2021 ◽  
Vol 2021.59 (0) ◽  
pp. 04c3
Author(s):  
Shintaro Tanaka ◽  
友宏 深谷 ◽  
弘貴 山口 ◽  
文哉 佐藤 ◽  
Md Issa Nurhayati ◽  
...  
Author(s):  
Y. Chikahiro ◽  
I. Ario ◽  
M. Nakazawa ◽  
S. Ono ◽  
J. Holnicki-Szulc ◽  
...  

2016 ◽  
Vol 693 ◽  
pp. 1651-1657 ◽  
Author(s):  
Hai Bo Lin ◽  
Chui Jie Yi ◽  
Zun Min Liu

The wheat precision seeding technology provided an advanced agricultural protection for the high yield of wheat. But the lack of an effective agricultural machine made this technology difficult to apply widely. In this paper a quadruped wheel robot to achieve the wheat precision seeding technology was designed. And experimental study was taken under different operating conditions. Because of multiple effort factors, a quadratic orthogonal rotation combination design method was applied in the experiments, and identifying the main factors by analysis. Then the field test was carried out according to the main factors. The experiment results showed that the qualified rates of seeding exceed 93% in different sowing speed. That reached the agronomic requirements of wheat precision seeding.


2016 ◽  
Vol 30 (11) ◽  
pp. 1391-1406 ◽  
Author(s):  
Licheng Zhou ◽  
Yang Ju ◽  
Yongmao Pei ◽  
Daining Fang

2020 ◽  
Vol 12 (1) ◽  
pp. 21
Author(s):  
Hasbunallah AS ◽  
Ahmad Rum Bismar

The aim of this experimental study was todetermine the effect of all teaching methods, part, mixed and motivation result learning toward of flat service skill courts tennis. Learning motivation is divided into two parts, namely high andlow.This research was conducted at Faculty of Sport ScienceState University of Macassar,the academic year 2014/2015. Experimental using factorial design method 2x3. The sample consisted of 60 students were divided into 6 groups, each consisting of 10 students. Data analysis technique is a two-way analysis of variance (ANOVA) followed by Tukey's test at a significance level of α= 0.05. The results of this study indicate that ( (1) overall teaching methods higher effect of the part teacing methods on learning outcomes flat tennis service skills (2) overall teaching methods lower effect of the part teacing methods on learning outcomes flat tennis service skills, (3) overall teaching methods lower effect of the part teacing methods on learning outcomes flat tennis service skills,(4) there is interaction between the overall teaching methods, part teaching methods and combined teaching methods and learning motivation outcomes flat tennis service skills,(5) overall teaching methods higher effect of the part teacing methods on learning outcomes flat tennis service skillsusing a high learning motivation, (6) overall teaching methods lower effect of the part teacing methods on learning outcomes flat tennis service skillsusing a high learning motivation, (7) part teaching methods lower effect of the combined teacing methods on learning outcomes flat tennis service skillsusing a high learning motivation, (8) overall teaching methods higher effect of the part teacing methods on learning outcomes flat tennis service skillsusing a low learning motivation, (9) overall teaching methods lower effect of the part teacing methods on learning outcomes flat tennis service skillsusing a low learning motivation, (10) part teaching methods lower effect of the combined teacing methods on learning outcomes flat tennis service skillsusing a low learning motivation.


Author(s):  
Taesik Jeong ◽  
Thomas P. Kicher ◽  
Ronald J. Zab

Abstract An object-oriented programming (OOP) technique is investigated in order to develop the framework for mechanical design automation systems. A task-oriented decomposition approach is applied to conceptualize the task-object (or task-performing-object) in which common behavior and communication protocols are encapsulated [1]. Each task in the entire design process, either controlling design strategies or performing design methods, is made into an object. The design method objects are implemented using Artificial Intelligence (AI) paradigms, such as artificial neural networks and expert systems. This report explains how OOP is integrated to develop a mechanical design framework (MDF). A single reduction gear box design process was used to identify some of the general tasks involved in mechanical design process. From this process the guidelines for developing task-objects for future systems are formed. Full details of these guidelines and an implementation example in Smalltalk on a PC are available in [7].


Author(s):  
Patrik Boart ◽  
Ola Isaksson

Currently, mechanical design of aero engine structural components is defined by dimensioning of Design Parameters (DP's) to meet Functional Requirements (FR's). FR's are typically loads, geometrical interfaces and other boundary conditions. Parameters from downstream processes are seldom actually seen as DP's. This paper proposes that downstream process parameters are treated as DP's which calls for engineering methods that can define and evaluate these extended set of DP's. Using the proposed approach manufacturing process alternatives can be used as DP's in early stages of product development. Both the capability to quantitatively assess impact of varying manufacturing DP's, and the availability of these design methods are needed to succeed as an early phase design method. One bottleneck is the preparation time to define and generate these advanced simulation models. This paper presents how these manufacturing process simulations can be made available by automating the weld simulation preparation stages of the engineering work. The approach is based on a modular approach where the methods are defined with knowledge based engineering techniques-operating close to the CAD system. Each method can be reused and used independently of each other and adopted to new geometries. A key advantage is the extended applicability to new products, which comes with a new set of DP's. On a local level the lead time to generate such manufacturing simulation models is reduced with more than 99% allowing manufacturing process alternatives to be used as DP's in early stages of product development.


Author(s):  
H. V. Darbinyan

Mechanism and function formalization problem is touched in a novel task based conceptual mechanical design method. The general concept and a specific application of this method were reported in earlier publications. Direct dependence between the function and mechanism, identical synthesis tools for various stages of design and for various mechanical objects are the features making the suggested method advantageously different from existing concept design approaches. The core idea of suggested conceptual design method is the direct relation between challenged function and the mechanical entity which is in charge of implementing the requested function. The existing task based conceptual design methods are not satisfying the designer’s needs for scope of application, universality of design means, visualization and formalization of both mechanical and functional fields. Formalization of functions and mechanisms is an important design tool that will facilitate synthesis, analyzes, visualization and archiving (data base creating) processes of mechanical development. Further progress in unveiling the resources of the suggested design method is mostly based on development of formalization means for both categories of functions and mechanisms. The current study is unveiling newly developed function and mechanism description language that is helping to formalize both mechanical and functional categories facilitating their involvement in design process and making the description of a new product’s mechanical development easy and understandable. Function formalization in conjunction with mechanism formalization allows to formulate precisely the design task and concentrate the designer’s attention on solution of a single task strictly arranged in the hierarchical function tree of all involved tasks and functions.


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