Predicting Change Propagation and Impact on Design Schedule Due to External Changes

Purpose – The purpose of this paper is to establish an adaptive assembly, to realize the adaptive changing of the models and to improve the flexibility and reliability of assembly change. For a three-dimensional (3D) computer-aided design (CAD) assembly in a changing process, there are two practical problems. One is delivering parameters’ information not smoothly. The other one is to easily destroy an assembly structure. Design/methodology/approach – The paper establishes associated parameters design structure matrix of related parts, and predicts possible propagation paths of the parameters. Based on the predicted path, structured storage is made for the affected parameters, tolerance range and the calculation relations. The study combines structured path information and all constrained assemblies to build the adaptive assembly, proposes an adaptive change algorithm for assembly changing and discusses the extendibility of the adaptive assembly. Findings – The approach would improve the flexibility and reliability of assembly change and be applied to different CAD platform. Practical implications – The examples illustrate the construction and adaptive behavior of the assembly and verify the feasibility and reasonability of the adaptive assembly in practical application. Originality/value – The adaptive assembly model proposed in the paper is an original method to assembly change. And compared with other methods, good results have been obtained.

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Predictabilty of Change in Engineering: A Complexity View

Volume 5b: Power Transmission and Gearing Conference ◽

10.1115/detc2005-85435 ◽

2005 ◽

Cited By ~ 6

Author(s):

Claudia Eckert ◽

John Clarkson ◽

Chris Earl

Keyword(s):

Empirical Studies ◽

Change Propagation ◽

Design Change ◽

Design Changes ◽

Action Model ◽

Static Background

Design changes can be surprisingly complex. We examine the problems they cause and discuss the problems involved in predicting how changes propagate, based on empirical studies. To assist this analysis we distinguish between (a) a static background of connectivities (b) descriptions of designs, processes, resources and requirements and (c) the dynamics of design tasks acting on descriptions. The background might consist of existing designs and subsystems, or established processes used to create them. The predictability of design change is examined in terms of this model, especially the types and scope of uncertainties and where complexities arise. An industrial example of change propagation is presented in terms of the background (connectivity) - description - action model.

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Exploring Effective Change Propagation in a Product Family Design

Journal of Mechanical Design ◽

10.1115/1.4037627 ◽

2017 ◽

Vol 139 (12) ◽

Cited By ~ 3

Author(s):

Inayat Ullah ◽

Dunbing Tang ◽

Qi Wang ◽

Leilei Yin

Keyword(s):

Product Family ◽

Design Structure Matrix ◽

Change Propagation ◽

Effective Change ◽

Design Structure ◽

Design Changes ◽

Requirements Change ◽

Change Impact ◽

Design Requirements

Product family (PF) design is a widely used strategy in the industry, as it allows meeting diverse design requirements. Change propagation in any PF is difficult to predict. Consequently, while numerous design change management methodologies presently exist, their application is restricted to a single artifact. This issue is overcome in the present study. The proposed framework explores effective change propagation paths (CPPs) by considering the risks associated with design changes in the PF with the aim of minimizing the overall redesign cost. The propagated risk, which would result in rework, is quantified in terms of change impact and propagation likelihood. Moreover, a design structure matrix (DSM) based mathematical model and an algorithm for its implementation are proposed to investigate the change propagation across the PF. Finally, to demonstrate their effectiveness, a PF of electric kettles is examined in a case study. The study findings confirm that the proposed technique is appropriate for evaluating different CPPs in PF.

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Incorporating Design Schedule Management into a Flow Management System

32nd Design Automation Conference ◽

10.1109/dac.1995.250068 ◽

1995 ◽

Cited By ~ 3

Author(s):

Eric W. Johnson

Keyword(s):

Management System ◽

Flow Management ◽

Schedule Management ◽

Design Schedule

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One Vanderbilt: Unprecedented Project Delivery Through Integrated Innovation

IABSE Congress, New York, New York 2019: The Evolving Metropolis ◽

10.2749/newyork.2019.1851 ◽

2019 ◽

Author(s):

Andrew Cleary ◽

Edward M. DePaola ◽

Christopher R. Horch

Keyword(s):

New York ◽

Structural Steel ◽

Fast Track ◽

Urban Environments ◽

Advanced Technology ◽

Parametric Modelling ◽

Under Construction ◽

Construction Loads ◽

Design Schedule ◽

Construction Documents

One Vanderbilt Avenue, currently under construction in midtown Manhattan, will be one of the tallest buildings in New York. By collaborating with the construction teams in the early stages of the design, the foundations and the superstructure were able to proceed well in advance of a typical project. For example, the structural steel was erected to the 6th floor, was fabricated to the 32nd Floor, and the shop drawings were checked up to the 45th floor on the day that the 100% Construction Documents were issued.The structural steel frame was designed so that its core columns only carried 12 levels of framing and construction loads during the tower’s erection. A concrete shear wall system followed the steel framing, permitting the steel erection to proceed without regard to the concrete operations. When complete, the project will stand 1,401 feet tall and contain 26,000 tons of structural steel, and 93,000 cubic yards of concrete.The presentation focuses on the challenges and technological requirements for vertical construction in dense urban environments. It explains the amount of detail, thought, and knowledge of construction that must happen earlier in the design process and the participants will appreciate how the fast‐track process can be applied to complex architectural, mechanical and structural designs.It describes the integration of design team parametric modelling with the construction process early in the design schedule. Fast‐track projects with complex designs like One Vanderbilt can be successfully completed by understanding and integrating an IPD process, even with competing objectives. The presentation discusses the challenges and technological requirements for vertical construction in dense urban environments, including the importance of direct links to mass transportation.This type of team structure is the future of the industry, and One Vanderbilt is the first of its kind to illustrate how innovative design ambitions are being realized through the use of increasingly refined and advanced technology.

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Associations management and change propagation in the CAD assembly

Computers in Industry ◽

10.1016/j.compind.2018.02.012 ◽

2018 ◽

Vol 98 ◽

pp. 134-144 ◽

Cited By ~ 2

Author(s):

Ameni Eltaief ◽

Borhen Louhichi ◽

Sébastien Remy

Keyword(s):

Change Propagation

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Towards Rapid Redesign: Pattern-based Redesign Planning for Large-Scale and Complex Redesign Problems

Journal of Mechanical Design ◽

10.1115/1.2218885 ◽

2005 ◽

Vol 129 (2) ◽

pp. 227-233 ◽

Cited By ~ 1

Author(s):

Simon Li ◽

Li Chen

Keyword(s):

Large Scale ◽

Solution Process ◽

Input Pattern ◽

Change Propagation ◽

Strategy Selection ◽

Relief Valve ◽

Road Map ◽

Planning Approach ◽

Map Generation ◽

Do So

We have developed a decomposition-based rapid redesign methodology for large and complex computational redesign problems. While the overall methodology consists of two general steps: diagnosis and repair, in this paper we focus on the repair step in which decomposition patterns are utilized for redesign planning. Resulting from design diagnosis, a typical decomposition pattern solution to a given redesign problem indicates the portions of the design model necessary for recomputation as well as the interaction part within the model accountable for design change propagation. Following this, in this paper we suggest repair actions with an approach derived from an input pattern solution, to generate a redesign road map allowing for taking a shortcut in the redesign solution process. To do so, a two-stage redesign planning approach from recomputation strategy selection to redesign road map generation is proposed. An example problem concerning the redesign of a relief valve is used for illustration and validation.

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