scholarly journals An Approach for Integrating Mixed Reality into BIM for Early Stage Design Coordination

2020 ◽  
Vol 312 ◽  
pp. 04001
Author(s):  
Abhinesh Prabhakaran ◽  
Abdul-Majeed Mahamadu ◽  
Lamine Mahdjoubi ◽  
Patrick Manu
Keyword(s):  
Mixed Reality ◽  
3D Visualization ◽  
Early Stage ◽  
Stage Design ◽  
Single Interface ◽  
Architectural Engineering ◽  
Design Coordination ◽  
Building Information ◽  
Early Stage Design ◽  
The Impact

Building Information Modelling (BIM) and its associated technologies have proved to be one of the most promising developments in the Architectural, Engineering and Construction (AEC) industry. Over the past few decades, the AEC sector has been restricted in its communication of design as a result of single interface methods based on 2D and 3D visualization of information. Thus, most issues with respect to construction are identified fairly late, resulting in costly changes. With the introduction of BIM, many other approaches to data visualization can be leveraged including Mixed Reality (MR) applications for the virtual representation of spaces and objects beyond 3D. MR offers a revolution in the virtual representation of objects and space through context awareness as well as the incorporation of information beyond 3D offering countless opportunities for more effective design visualization and coordination. Despite the capability of MR, however, few examples exist of its application to design coordination in the AEC. In addressing this gap this study proposes a novel methodology for the application of MR in design coordination as well as investigates the impact of introducing MR into BIM workflow with a focus on the identification and avoidance of clashes. A prototypical model of the MR design coordination is presented and discussed. Findings indicate that MR improves design productivity and quality but also highlights potential infrastructure issues inhibiting the mainstreaming of MR for design practice.

The Influence of Rule Changes on Design and Performance of Offshore Vessels – Myths Meet Reality

2015 ◽  
Author(s):  
Ali Ebrahimi ◽  
Per Olaf Brett ◽  
Jose Jorge Garcia Agis ◽  
Ulrikke Brandt ◽  
Henrique M. Gaspar
Keyword(s):  
Early Stage ◽  
Decision Makers ◽  
Stage Design ◽  
Performance Benchmarking ◽  
Regulatory Changes ◽  
Practical Design ◽  
Rule Changes ◽  
Early Stage Design ◽  
And Performance ◽  
The Impact

The aim of this paper is to demonstrate by “facts and figures” the perceived influence of rule changes, including but not limiting to the safety for special purpose ships (SPS) codes and marine regulatory changes since 2000, in the design of different offshore vessel. It is stated by many that practical design of offshore vessels, as one of the major groups of special purpose work vessels, has been significantly influenced by new rules introduced. For example, SPS code developments over the last years, have created challenges for designers besides endless argumentations to envelope proper sample of vessels for similar vessel based designs. The same problems are observed within performance benchmarking of samples and fleets of vessels over time series. However, enabling designers and decision makers in the early stage design phase to understand the impact of such codes and regulations on vessels’ price, performances, capacities and capabilities, is a significant and important issue, which has not been studied comprehensively during the last years. This influence study is based on two major design perspectives of ‘design for Efficiency’ and ‘design vessel for Effectiveness.

The Role of Idea Fluency and Timing on Highly Innovative Design Concepts

2020 ◽  
Author(s):  
Yakira Mirabito ◽  
Kosa Goucher-Lambert
Keyword(s):  
Large Scale ◽  
Design Research ◽  
Early Stage ◽  
Deep Understanding ◽  
Concept Generation ◽  
Stage Design ◽  
Single Measure ◽  
Design Concepts ◽  
Early Stage Design ◽  
The Impact

Abstract Ongoing work within the engineering design research community seeks to develop automated design methods and tools that enhance the natural capabilities of designers in developing highly innovative concepts. Central to this vision is the ability to first obtain a deep understanding of the underlying behavior and process dynamics that predict successful performance in early-stage concept generation. The objective of this research is to better understand the predictive factors that lead to improved performance during concept generation. In particular, this work focuses on the impact of idea fluency and timing of early-stage design concepts, and their effect on overall measures of ideation session success. To accomplish this, we leverage an existing large-scale dataset containing hundreds of early-stage design concepts; each concept contains detailed ratings regarding its overall feasibility, usefulness, and novelty, as well as the completion time of each idea. Surprisingly, results indicate that there is no effect of idea fluency or timing on the quality of the output when using a holistic evaluation mechanism, such as the innovation measure, instead of a single measure such as novelty. Thus, exceptional concepts can be achieved by all generator segments independent of idea fluency. Furthermore, in early-stage concept generation sessions, highest-rated concepts have an equal probability of occurring early and late in a session. Taken together, these findings can be used to improve performance in ideation by effectively determining when and which types of design interventions future design tools might suggest.

Factors Impacting Highly Innovative Designs: Idea Fluency, Timing, and Order

2021 ◽  
pp. 1-29
Author(s):  
Yakira Mirabito ◽  
Kosa Goucher-Lambert
Keyword(s):  
Large Scale ◽  
Design Research ◽  
Early Stage ◽  
Deep Understanding ◽  
Concept Generation ◽  
Stage Design ◽  
Single Measure ◽  
Design Concepts ◽  
Early Stage Design ◽  
The Impact

Abstract Ongoing work within the engineering design research community seeks to develop automated design methods and tools that enhance the natural capabilities of designers in developing highly innovative concepts. Central to this vision is the ability to first obtain a deep understanding of the underlying behavior and process dynamics that predict successful performance in early-stage concept generation. The objective of this research is to better understand the predictive factors that lead to improved performance during concept generation. In particular, this work focuses on the impact of idea fluency and timing of early-stage design concepts, and their effect on overall measures of ideation session success. To accomplish this, we leverage an existing large-scale dataset containing hundreds of early-stage design concepts; each concept contains detailed ratings regarding its overall feasibility, usefulness, and novelty, as well as when in the ideation session the idea was recorded. Surprisingly, results indicate that there is no effect of idea fluency or timing on the quality of the output when using a holistic evaluation mechanism, such as the innovation measure, instead of a single measure such as novelty. Thus, exceptional concepts can be achieved by all participant segments independent of idea fluency. Furthermore, in early-stage concept generation sessions, highest-rated concepts have an equal probability of occurring early and late in a session. Taken together, these findings can be used to improve performance in ideation by effectively determining when and which types of design interventions future design tools might suggest.

scholarly journals A COMPARISON OF STRUCTURED LIGHT SCANNING AND PHOTOGRAMMETRY FOR THE DIGITISATION OF PHYSICAL PROTOTYPES

2021 ◽  
Vol 1 ◽  
pp. 11-20
Author(s):  
Owen Freeman Gebler ◽  
Mark Goudswaard ◽  
Ben Hicks ◽  
David Jones ◽  
Aydin Nassehi ◽  
...  
Keyword(s):  
Early Stage ◽  
Structured Light ◽  
Superior Performance ◽  
Specific Design ◽  
Model Quality ◽  
Stage Design ◽  
Design Changes ◽  
Structured Light Scanning ◽  
Early Stage Design

AbstractPhysical prototyping during early stage design typically represents an iterative process. Commonly, a single prototype will be used throughout the process, with its form being modified as the design evolves. If the form of the prototype is not captured as each iteration occurs understanding how specific design changes impact upon the satisfaction of requirements is challenging, particularly retrospectively.In this paper two different systems for digitising physical artefacts, structured light scanning (SLS) and photogrammetry (PG), are investigated as means for capturing iterations of physical prototypes. First, a series of test artefacts are presented and procedures for operating each system are developed. Next, artefacts are digitised using both SLS and PG and resulting models are compared against a master model of each artefact. Results indicate that both systems are able to reconstruct the majority of each artefact's geometry within 0.1mm of the master, however, overall SLS demonstrated superior performance, both in terms of completion time and model quality. Additionally, the quality of PG models was far more influenced by the effort and expertise of the user compared to SLS.

scholarly journals Multi-objective Early-stage Design of Automotive Hybrid Assembly Lines

Procedia CIRP ◽  
2015 ◽  
Vol 28 ◽  
pp. 125-130 ◽  
Author(s):  
M. Colledani ◽  
L. Bolognese ◽  
D. Ceglarek ◽  
F. Franchini ◽  
C. Marine ◽  
...  
Keyword(s):  
Early Stage ◽  
Hybrid Assembly ◽  
Assembly Lines ◽  
Stage Design ◽  
Multi Objective ◽  
Early Stage Design

Some Guidance for Hull Form Selection for SWATH Ships

1988 ◽  
Vol 25 (04) ◽  
pp. 239-252
Author(s):  
G. Robed Lamb
Keyword(s):  
High Speed ◽  
Early Stage ◽  
The United States ◽  
Practical Application ◽  
Hull Form ◽  
Stage Design ◽  
Seakeeping Performance ◽  
The World ◽  
Selection For ◽  
Early Stage Design

Even though in 1987 there were only a dozen SWATH (smali-waterplane-area twin-hull) craft and ships afloat around the world, word of their markedly superior seakeeping performance is spreading rapidly. The number of SWATH vessels is likely to double within five years. As in many other areas of technology, the United States and Japan are the acknowledged leaders in the development and practical application of the SWATH concept. This paper reviews the characteristics of existing SWATH craft and ships from the standpoint of the stated seakeeping objective. Hull form differences between four SWATH craft and ships, including the Navy's SSP Kairnalino, are analyzed and interpreted. Important considerations for the early-stage design of a SWATH ship are discussed. Differences in the range of feasible hull form geometries for coastal areas and unrestricted ocean operations, and for low-speed versus moderately high-speed applications, are pointed out.

Selecting a Compressor Meridional Topology: Axial, Mixed, Radial

2021 ◽  
Author(s):  
Jonathan M. Smyth ◽  
Robert J. Miller
Keyword(s):  
Design Optimization ◽  
Early Stage ◽  
New Products ◽  
Systems Design ◽  
Blade Design ◽  
Improved Method ◽  
Stage Design ◽  
Specific Speed ◽  
Early Stage Design ◽  
Smith Chart

Abstract This paper proposes a new duty-based Smith Chart as part of an improved method of selecting the geometric topology of compressors (axial, mixed or radial) in the earliest stage of design. The method has a number of advantages over previous methods: it is based on the non-dimensional flow and the non-dimensional work, which aligns with the aerodynamic function of the compressor and is therefore more intuitive than specific speed and specific diameter. It is based on a large number of consistently designed compressor rotors which have been computationally predicted using RANS CFD. Most importantly, it provides the designer not only with a choice of topology but also with the complete meridional geometry of the compressor, its blade design and the number of blades. This fidelity of geometry at the very early stage of design allows the designer to undertake a true systems design optimization (noise, manufacturing, packaging constraints and cost). This has the major advantage of significantly reducing early stage design times and costs and allows the designer to explore completely new products more quickly.

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