Designing of intake manifold for Formula Student car

2018 ◽  
Vol 15 (3) ◽  
pp. 402-406 ◽  
Author(s):  
Paramjotsingh Sardar ◽  
Arshdeepsingh Sardar
Keyword(s):  
Transient Analysis ◽  
Design Methodology ◽  
Helmholtz Resonator ◽  
Intake Manifold ◽  
Dynamics Analysis ◽  
Steady State Analysis ◽  
Content Type ◽  
Dynamic Events ◽  
Computational Fluid Dynamics Analysis ◽  
Fine Tune

Purpose The purpose of this research was to design an intake manifold which will improve the functioning of the engine. This will improve the acceleration of the car which will help in performing better at the dynamic events at a Formula Student Competition. Design/methodology/approach The approach was to use the Helmholtz resonator theory to find the appropriate runner length for the desired rotation per minute range. Along with this, it is important to ensure that there is minimum flow separation for which computational fluid dynamics analysis was carried out. Findings The research showed that all the processes involved in this system are dynamic, so steady-state analysis is not quite relevant instead transient analysis will help in getting a better idea. Originality/value Majority of research is primarily focused on convergent divergent nozzle, to try and minimize the effect of the restrictor. But to fine-tune the performance of the engine, it is important to consider the effects of runners and plenum so as to choose appropriate runner length and plenum volume.

Design and locomotivity analysis of a novel deformable two-wheel-like mobile mechanism

2020 ◽  
Vol 47 (3) ◽  
pp. 369-380 ◽  
Author(s):  
Qianqian Zhang ◽  
Yezhuo Li ◽  
Yan-An Yao ◽  
Ruiming Li
Keyword(s):  
Design Methodology ◽  
Mode Switching ◽  
Main Body ◽  
Dynamics Analysis ◽  
Kinematics Analysis ◽  
Content Type ◽  
Physical Prototype ◽  
Dynamic Obstacle ◽  
Rolling Mode ◽  
Multi Mode

Purpose The purpose of this paper is to propose a deformable two-wheel-like mobile mechanism based on overconstrained mechanism, with the abilities of fast rolling and obstacle surmounting. The drive torque of the multi-mode motions is generated by self-deformation. Moreover, the analyses of feasibility and locomotivity of two mobile modes are presented. Design/methodology/approach The main body of the two-wheel-like mobile mechanism is a kind of centrally driven 4 R linkages. The mobile mechanism can achieve the capabilities of fast rolling and obstacle surmounting through integrating two mobile modes (spherical-like rolling mode and polyhedral-like obstacle-surmounting mode) and can switch to the corresponding mode to move or surmount obstacles. The mobility and kinematics of the mobile modes are analyzed. Findings Based on the results of kinematics analysis and dynamics analysis of the wheel-like mechanism, the spherical-like rolling mode has the capability of fast rolling, and the polyhedral-like obstacle-surmounting mode has the capability of surmounting different obstacle heights by two submodes (quasi-static obstacle-surmounting submode and dynamic obstacle-surmounting submode). The proposed concept is verified by experiments on a physical prototype. Originality/value The work presented in this paper is a novel exploration to apply bar linkages in the field of scout. The two-wheel-like mobile mechanism improves the torque imbalance of bar linkages by centrally driven method, removes the rear support structures of the traditional two-wheeled mechanisms by self-deformation and increases the height of obstacle surmounting by mode switching angle.

Unlearning established organizational routines – Part II

2017 ◽  
Vol 24 (2) ◽  
pp. 82-92 ◽  
Author(s):  
C. Marlena Fiol ◽  
Edward J. O’Connor
Keyword(s):  
Behavioral Medicine ◽  
Design Methodology ◽  
Empirical Studies ◽  
Organizational Routines ◽  
Content Type ◽  
Fine Tune

Purpose The purpose of Part II of this two-part paper is to uncover important differences in the nature of the three unlearning subprocesses, which call for different leadership interventions to motivate people to move through them. Design/methodology/approach The paper draws on research in behavioral medicine and psychology to demonstrate that initial destabilizing of old patterns and the subsequent behavioral processes of discarding the old and experimenting with the new are qualitatively different. Findings Leadership interventions must fit the unique requirements of each unlearning subprocess. Discarding old routines requires continued focus on the costs of not doing so, as well as a progressive refocus on positive possibilities and engaging people in activities to explore them. When aspects of the old routine resurface, the costs of relapse must again become salient, leading to further discarding-from-use, followed by further positive experimentation. Finally, maintaining long-term release of an embedded routine requires recognition of the emerging new patterns and a shift from future-oriented visioning of possibilities to current satisfaction with the new. Originality/value All empirical studies of organizational unlearning imply some form of destabilization of old learning as an antecedent to unlearning, and many of them discuss subsequent behavioral and cognitive displacement. However, they have not clearly distinguished between these subprocesses to fine-tune how to motivate people to move through them. This paper addresses that gap.

Metric proposal for customer engagement in Facebook

2014 ◽  
Vol 8 (4) ◽  
pp. 327-344 ◽  
Author(s):  
Mª Ángeles Oviedo-García ◽  
Miriam Muñoz-Expósito ◽  
Mario Castellanos-Verdugo ◽  
María Sancho-Mejías
Keyword(s):  
Customer Value ◽  
Design Methodology ◽  
Business Environment ◽  
Social Networking Site ◽  
Customer Engagement ◽  
Previous Attempt ◽  
Specific Context ◽  
Content Type ◽  
Starting Point ◽  
Fine Tune

Purpose – The purpose of this paper is to propose a comprehensive metric for customer engagement in Facebook, the top social networking site. Design/methodology/approach – The approach is conceptual and it makes operative customer engagement concept in the specific context that is Facebook. Findings – In the new dynamic business environment fostered by Internet, where customer value goes beyond what the customer spends on a brand or a firm, firms will be able to fine-tune their customer engagement strategy by means of the metric results and its evolution. Research limitations/implications – The paper, which provides insight and a metric for customer engagement in Facebook, is a starting point for future conceptual and empirical research that might be conducted to further refine the proposed metric. The assessment of engagement achieved as a result of actions on Facebook will allow marketers to evaluate the efficiency of the action and, through its longitudinal evaluation, the fluctuation according to different posting strategies used, so managers can see whether engagement or disengagement is happening and then make decisions about which type of content generates better engagement. Originality/value – The metric offered is unique, as it focuses on customer engagement on Facebook, and to the best of author’s knowledge, there is not any previous attempt to measure it.

Goal-oriented balancing: happy–happy negotiations beyond win–win situations

2017 ◽  
Vol 32 (4) ◽  
pp. 525-534 ◽  
Author(s):  
Lars-Johan Åge ◽  
Jens Eklinder-Frick
Keyword(s):  
Grounded Theory ◽  
Design Methodology ◽  
Negotiation Process ◽  
Content Type ◽  
The Core ◽  
Dynamic Events ◽  
Negotiation Research ◽  
Negotiation Processes ◽  
Different Dimensions ◽  
Practical Implications

Purpose This paper aims to suggest a dynamic model incorporating the important dimensions that exist in negotiation processes. Design/methodology/approach To produce a general and conceptual theory of negotiation, the grounded theory methodology is deployed. Findings The core process in this model is dubbed “goal-oriented balancing” and describes how he negotiator is continuously balancing opposing, and seemingly contrasting, forces in a situation specific and dynamic manner to reach agreements. Based on these findings, this study also suggests a concept to describe negotiations that is focused on collaboration and that is not an oxymoron as is the concept of “win–win”. Practical implications This conceptual model can be used by managers and practitioners to navigate in a negotiation process. Originality/value This is the first grounded theory study in negotiation research and attempt to describe negotiation processes as dynamic events in which different dimensions are managed simultaneously.

Structural dynamics of a gyrocopter: numerical approach in some emergency cases

2018 ◽  
Vol 90 (4) ◽  
pp. 699-710
Author(s):  
Adam Dacko ◽  
Pawel Borkowski ◽  
Lukasz Pawel Lindstedt ◽  
Cezary Rzymkowski ◽  
Miroslaw Rodzewicz
Keyword(s):  
Design Methodology ◽  
Structural Response ◽  
Numerical Approach ◽  
Design Parameters ◽  
Dynamic Problems ◽  
Content Type ◽  
Modeling And Analysis ◽  
Dynamic Events ◽  
Rescue System ◽  
Practical Implications

Purpose This paper aims to present the assumptions, analysis and sample results of numerical modeling and analysis of dynamic events encountered in emergency cases during deployment of parachute rescue system (PRS) and hard landing of a small gyrocopter. The optimal design requires knowledge of structural loads and structural response – the information obtained often from experiment. Numerical simulation is presented as an alternative tool for estimating these data. Design/methodology/approach Structural analyses were performed using MSC.Nastran. Multibody simulations were done using MADYMO system. Findings Initial design parameters were evaluated and verified in numerical simulations. Some of the resulting conclusions were proven during the test flights. Practical implications Some chosen results of simulation of dynamic problems are presented. They can be useful as reference values for similar cases for light aircraft analysis. Originality/value The paper presents an alternative way of assessing structural response parameters in the case of emergency dynamic events of usage of PRS. The results can be used in other projects.

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