Welcome to the website for the Second International Workshop on Origami Engineering!
6-8 November, 2017, Tianjin University, Tianjin, China
Overview   Speakers and Abstracts Program   Venue Workshop Photos
 Overview

 

The Second International Workshop on Origami Engineering will be held from 6 to 8 November, 2017, in Tianjin University, Tianjin, China, following the first one in UIUC organised by Professor Glaucio Paulino back in 2014.
The objective of the workshop is to bring together researchers from all aspects of origami to exchange ideas and share views about the cutting-edge topics in the area, and to promote the applications of origami in science and engineering. The workshop will consist of keynote sessions from world leading experts and poster sessions for domestic and international researchers to present their research outcomes. Top 10% of the posters will be selected for the Best Poster Award.

 

 
Speakers and Abstracts
      Glaucio H Paulino
      Zhong You
      Larry Howell
      Mark Bolitho
      Kyu-Jin Cho
      Wenwu Chang
   
Geometry behind Flat-fold Cone and Honeycomb
 
In this lecture, I will mainly discuss two topics: one is the twist fold of a cone ; Another is the space-filling cube origami.
During the first part of discussion I will talk about the background of the topic which is triggered by a series of dresses designed by Issey Miyake's team. then by mathematics analysis a formula is established to ensure the original cone be folded flat completely. Actually this is a sufficient and necessary condition to do so. In the end of this topic, an application in paper cup manufacturing will be shown to the audience.
In the second phase of my lecture, I will explain how to fold a basic module of cube frame from a rectangle sheet. The rectangle sheet will need to first covered by a net of of parallel creases whose slope be ±sqrt(2). That is the slope of a diagonal on a A4 paper. Finally, a theory of so-called cut-melt scheme will be given to extend the cube to infinite honeycomb structure. That means given a sufficient large paper, one can always origami as many cubes as he wants from it and the paper would keep a whole sheet without cutting. This result may not be just of mathematical meaning, it will benefit the package industry by saving plastic foam as filling material.
 
About Wenwu Chang
 
  Wenwu Chang is an interdisciplinary senior teacher at modern educational technology center in Shanghai. He obtained his Ph.D. in mathematics from Fudan University, China.
 
 
      Ichiro Hagiwara
   
Current State and Issues of Industrialization from Origami-engineering
 
It has passed around 15 years since Dr. Nojima proposed Origami-engineering on November, 2002. Till now, Origami structure has been used in aerospace structures because in aerospace it can be permitted even in high cost manufacturing. In another industries, it is not permitted in high-cost manufacturing even though origami structure has excellent characteristics such as foldable & deployable and light & stiff. For example, most of vehicle crash energy-absorbed structures are developed by author's patent. Even now, it has 2 weak points such as initial peak load is high and only 70% collapsed in its length. We have shown Reversed Spiral Origami Structure (RSO) can solve these items and optimized RSO can absorb crash-energy 1.4 times of present vehicle crash-energy absorbing structure. But among present manufacturing methods, only hydroforming method is applicable for RSO of steel. And the manufacturing cost is too high to be applied in real structure. Here we show the new and very cheap manufacturing method named partial revolution torsion method (PRT). Based on PRT method, we have developed new excellent structure named Reversed Torsion Origami Structure (RTO). Here we show RTO is more excellent than RSO, of course, much more excellent conventional crash absorbing structure. In such way, except crash energy-absorbing structure, gradually there have been industrialized some items such as isolators, the lightest safety foldable helmet, assembly Truss Core panel (ATCP) etc.. And we have developed Origami printer which is superior to 3D Additive printer in some points because 3D Additive printer is corresponding to forging and casting, not corresponding to pressamong 3 type manufacturing styles. It is the 3D Origami printer which corresponds to press. From now on Origami folding robot and Origami printer are the key technologies for more industrialization from Origami engineering.
 
About Ichiro Hagiwara
 
  Professor of MIMS(Meiji Institute for Advanced Study of Mathematical Sciences),
Emeritus Professor of TIT(Tokyo Institute of Technology)
 
 
      Guoxing Lu
   
Impact Response of Graded Cellular Materials and Origami Metamaterials
 
In this presentation, I will first report, in detail, our studies of graded (non-uniform) cellular materials subject to impact loading. The cellular material could have gradient in plateau stress, relative density and locking strain. A double-shock analytical model has been proposed where two plastic shock waves propagate towards each other, rather than only one shocfront as in the case of a uniform cellular material. Finite element analysis was also performed. Most recently, experiments were conducted with a simplified graded cellular material, where plastic deformation was captured by using high-speed photography and impact force was measured by using a Hopkinson bar. The impact force, force at the support (distal end) and the energy absorption of the graded cellular material are investigated thoroughly. Depending on applications, the graded cellular material should be arranged accordingly in order to achieve an optimum outcome.
From the viewpoint of impact mechanics, graded origami metamaterial bears a strong similarity to graded cellular materials. Hence, in the second part I will highlight some key parameters and outline possible approaches to studying the impact response of graded origami metamaterials. Some preliminary results will be presented.
 
About Guoxing Lu
 
  Guoxing Lu is Professor in Impact Engineering and Chair, Department of Mechanical and Product Design Engineering, Swinburne University of Technology, Melbourne, Australia. He obtained his PhD in Structural Mechanics from the University of Cambridge in 1989, supervised by Professor CR Calladine, FRS, FREng. Professor Lu has over 30 years of research experience in the field of impact engineering. He was a tenured faculty member at Nanyang Technological University, Singapore before he returned to Swinburne in 2015. His research interest is in energy absorption, dynamic behaviour of engineering materials at high strain-rates, structural response to impact, blast and shock loads and structural protection. He has published over 190 papers in international journals. His total number of citations is 4500 with an H-index 35. He has written a monograph with Professor TongXi Yu entitled “Energy Absorption of Structures and Materials”, 2003.
Professor Lu is an Associate Editor of International Journal of Impact Engineering and a member of editorial board of four other international journals. He is a founding Board Member of the International Society of Impact Engineering.
 
 
      Marc Miskin
   
From Atomic Origami To Cell-Sized Machines
 
Origami presents an attractive platform for miniaturizing machines: thinner layers of folding material lead to smaller devices.  Here, we take origami fabrication to its ultimate limit by using 2D atomic membranes as the folding materials.  Working with graphene, glass, platinum, and DNA, we bond  layers of these materials together to make atoms thick bimorph actuators that bend to micron radii of curvature.   By patterning rigid panels on top of these actuators, we can localize bending to produce folds and scale down existing origami patterns to produce a wide range of machines.  These machines change shape in fractions of a second in response to environmental changes, and perform useful functions on time and length scales comparable to microscale biological organisms.  Beyond simple folding, this technology presents direct routes to integrate with silicon based electronics, enabling a powerful platform for robotics at the cellular scale.
 
About Marc Miskin
 
   Marc Miskin is a Kavli Institute Postdoctoral Fellow in Nanoscale Science at Cornell. His work centers on building cell sized structures and machines by folding atomically thin sheets of paper. He has been at Cornell since receiving his PhD in physics from the University of Chicago in 2014. His work has won several awards including a Springer Thesis Award and the Grainger Fellowship for excellence in experimental physics. Outside of research, he is actively involved in public science education, frequently appearing as a presenter at the local children’s science museum.
 
 
      Yves Klett
   
Overview of Mechanical Properties of Foldcore-based Sandwich Structures
 
Folded structures in the form of tessellations have by now been established as alternative sandwich core material for high-performance lightweight applications. Several studies on the potential of Miura-ori and related tessellations have been presented in the last few years by different research groups. Due to the large number of possible combinations of materials and geometries, generation of a coherent picture of the overall performance of foldcores can be quite challenging.
We will present a compilation of the results of number of parametric studies carried out at the Institute of Aircraft Design (University of Stuttgart), which use a common methodology to evaluate mechanical properties of different unit cell geometries, with a focus of generating comparable results.
Data on the mechanical properties especially includes shear strength and stiffness. While favorable shear properties of foldcores have already been predicted by very early studies, useful data on shear properties has been sparse. We present the results of a number studies using both experimental as well as simulation setups. Experimental data has been collected for foldcores made from aramid-paper composites and thermoplastics, and has been supplemented by finite element analysis with a focus on isotropic materials. On the simulation side, a method to efficiently represent foldcore geometries and to realistically represent manufacturing imperfections has been developed anew.
The presented results add to the already existing data corpus, and give new insights on the influence of unit cell geometry on the compressive and shear performance of foldcore tessellations, and shed new light on interesting aspects like shear anisotropy and overall potential of folded structures for sandwich core applications.
 
About Yves Klett
 
  Yves Klett studied aerospace engineering in Stuttgart, Germany, where he fell for the charms of origami in the form of folded high-performance structures. Since getting a PhD in advanced paper folding, he is leading the sandwich technology group at the Institute of Aircraft Design in Stuttgart, which specializes in the design and industrial manufacture of origami-based foldcores for technical applications.
 
 
      Yan Chen
   
Rigid Origami
 
To solve the rigidity of origami patterns, a kinematic model has been set up. Firstly, we can use this model to judge the rigidity of origami pattern; secondly, with the reverse kinematics, the rigid origami patterns can be designed directly; thirdly, the parameter study on the pattern geometry leads to more varieties and graded patterns. It is interesting to find that for the same pattern, the mountain-valley fold assignment takes a great role in its rigidity. Therefore the deformation of the corresponding metamaterials. In addition, a simple switch of mountain-valley assignment on existing patterns can enable discovery of new metamaterials potentially with more intriguing properties such as 3D negative Poisson's ratio or programmable stiffness. This work will not only clear the arguments on origami foldability and rigidity, but also open up a new arena for the design of origami-inspired metamaterials with a broadened range of properties.
With our previous result on the thick-panel origami, a transition technique has been proposed by taking the thick-panel form of an origami pattern as an intermediate bridge. A zero-thickness rigid origami pattern and its thick-panel form share the same sector angles and folding behaviours, while the thick-panel origami and the mobile assembly of linkages are kinematically equivalent with difference only in link profiles. Applying this transition technique to typical four-crease origami patterns, we have found that the Miura-ori and graded Miura-ori patterns lead to assemblies of Bennett linkages with identical link lengths. The supplementary type origami patterns with different mountain-valley crease assignments correspond to different types of Bennett linkage assemblies with negative link lengths. And the identical linkage type origami pattern generates a new mobile assembly. Hence, the transition technique offers a novel approach to construct mobile assemblies of spatial linkages from origami patterns.
 
About Yan Chen
 
  Professor Yan Chen, PhD (Oxford, UK), CEng, FIMechE
Dr. Yan Chen is a professor in School of Mechanical Engineering at Tianjin University, China. She received her PhD in structural engineering at University of Oxford, UK in 2004. With a short PostDoc research experience in Oxford, she became an assistant professor in School of Mechanical and Aerospace Engineering at Nanyang Technological University, Singapore. In 2012, she was selected as one of National 'One-thousand Young Talents' by the Chinese government authority, she moved to Tianjin University as a professor. She is also the Fellow of Institution of Mechanical Engineers UK and the Vice-Chair of Chinese Committee, International Federation for the Promotion of Mechanism and Machine Science (IFToMM).
Her research specialty is on the emerging and advanced structures, which have internal mobility for shape transformation, with kinematics and mechanics as the theoretical foundations, aerospace deployable structures and robotics as application platforms, light-weight eco-material and medical microstructures as extension. Recently, she has applied the advanced kinematic theory to analysis and synthesis of rigid origami patterns. In 2015, her team has solved the problem on origami of thick panels, one of the major challenges in origami engineering, which was published on Science.
 
 
Program
 
Time

Monday

Tuesday

Wednesday

Hongyuan Lecture Theater
 8:10am-8:30am   Welcome speech
  and group photo
  Lab tour and poster
  session
  Lab visit and
  discussion
 8:30am-9:30am    Glaucio H Paulino   Ichiro Hagiwara
 9:30am-10:30am    Zhong You   Mark Bolitho
 10:30am-11:00am   Coffee break and
  poster session
  Coffee break and
  poster session
 11:00am-12:00pm   Larry Howell   Guoxing Lu
 12:00pm-1:30pm   Lunch   Lunch
 1:30pm-2:30pm   Wenwu Chang   Marc Miskin
 2:30pm-3:30pm    Kyu-Jin Cho   Yves Klett
 3:30pm-4:00pm   Coffee break   Coffee break and
  poster session
 4:00pm-5:00pm   Lab tour   Yan Chen
 5:00pm-6:00pm    Award ceremony,
  workshop closure
 
 
Venue
 
  The workshop will be held on the new Peiyang Park Campus of Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin, 300354, China. Tianjin is a city 150 km south east of Beijing. Accommodations for invited speakers will be provided at the nearby Crystal Palace Hotel located on 28 Youyi Road (Youyi Lu), Hexi District, Tianjin, 300061, China. Please contact workshop organizers with arrival and departure times to make travel arrangements. The organizers can also help domestic participants to book accommodations at Peiyang Kela Hotel on the Peiyang Park Campus of Tianjin University.  

 View 2017 Origami Engineering Workshop Map in a larger map

 
 
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