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elated to handling (storage/retrieval) of global data, definition and construction of ghost layer, special treatment for moving boundaries and handling of GFM at processor boundaries. The two simulations shown below are the shock wave interaction with hundred stationary particles and the three dimensional Taylor bar impact case. Figure.1 shows the simulation involving interface treatment of multiple particles in parallel framework. Figure. 2 shows the velocity profile of Taylor bar impact case (initial velocity = 400m/s in negative Y- direction). Society of Engineering Science ▪ 47 th Annual Technical Meeting 18
Experimental and Modeling Study to Determine the Turgor Pressure and Cell Wall Thickness of Arabidopsis Elham Forouzesh, Ashwani Goel, Joseph A Turner Department of Engineering Mechanics, University of Nebraska-Lincoln, W317.4 Nebraska Hall, Lincoln, NE 68588- 0526, USA. Abstract Plant cell walls are thin, tough, complex, and dynamic structures composed mainly of a network of extended polysaccharides [1]. In higher plants the dominant structural features are cellulose microfibrils, wrapped around the cells, which are cross-linked by single-chain polysaccharides such as xyloglucans embedded in a matrix mainly composed of pectin. The cell wall is responsible for filtering large molecules that can poison the cell. It also provides the structural support for the cell against expansion. When the water enters the cell due to osmosis it results in an increase of Turgor pressure. Turgor pressure plays an important role on the physiological behavior of a plant cell; it also has a direct effect on the mechanical properties of the cell. Plant water status can be measured via water potential or relative water content. This pressure is balanced by the stresses within the cell wall that provide the necessary force required for expansion of the growing cell [2]. The cell wall stresses depend on the cell geometry, cell wall thickness, cell wall mechanical properties, and Turgor pressure. Refregier et al [3] reported that, assuming equal growth conditions, thin-walled cells grow faster than thick-walled cells. The mechanical properties of plant cell walls influence the stability of the plant and also play a major role in plant growth. Therefore, measurement of the cell wall thickness and Turgor pressure is crucial to a clear understanding of its function. The conventional method for measuring the cell wall thickness is Transmission Electron Microcopy (TEM) or Scanning Electron Microscopy (SEM) both of which methods are destructive such that no further analysis can be performed on the cell. For Turgor pressure, different destructive methods such as thermocouple psychrometers, pressure chamber [4] and non-destructive methods such as ultrasonic spectroscopy measurement [5], plant-base probe [6] and leaf thickness measurement have been suggested, but these methods are mainly used for studying the water status of a given tissue and they can not be used to study single cells. The conventional method for measuring Turgor pressure in single cells is using pressure probe. However, it is not very accurate for small cells and it is very time consuming and technically demanding. It also is a destructive test and the tested cells can not be used for further studies. In this study a new non-destructive technique is proposed for measuring the cell wall thickness and Turgor pressure using nanoindentation. Nanoindentation has proven itself to be a powerful technique for the measurement of mechanical properties and can be used in diverse applications ranging from mineralized tissues to soft tissues. We have used this technique to quantify, in vivo, the Turgor pressure and thickness of cell wall based upon cyclic tests. Due to various unknowns in the problem, which includes shape and morphology of the plant, turgor pressure, instantaneous elastic modulus and viscoelastic material properties of the cell wall, a protocol has been developed that can be used to systematically evaluate the unknown parameters. This protocol combines the cyclic loading unloading experiments, relaxation tests, nano DMA, and a finite element model (FEM). Using the nano-DMA results and the results obtained from relaxation tests on live plant cells the cell wall was simulated. Figure 1 explains the steps for defining the turgor pressure in the cell and applying the load on the cell wall. 19 ABSTRACTS
Page 1 and 2: Abstracts 1 ABSTRACTS
Page 3 and 4: Contents 4 Foreword 5 Welcome from
Page 5 and 6: Welcome From College of Engineering
Page 7 and 8: Roger Fosdick Department of Aerospa
Page 9 and 10: Invariants in Nonlinear Elasticity
Page 11 and 12: Coarse-Graining Atomistic Dynamics
Page 13 and 14: Fracture Behavior of Mechanophore-L
Page 15 and 16: Stability of periodic media under c
Page 17: Three Dimensional Compressible Mult
Page 21 and 22: Thermoresponsive Microcapsules for
Page 23 and 24: Shear Activation of Mechanophore-Li
Page 25 and 26: Room Temperature Healing of a Therm
Page 27 and 28: Collagen Fibrils: Multifunctional N
Page 29 and 30: Tianxiang Su Mechanical Engineering
Page 31 and 32: Understanding the Influence of Stra
Page 33 and 34: Thermodynamic Based Higher-Order Gr
Page 35 and 36: 35 ABSTRACTS
Page 37 and 38: where is the heating rate. Derivati
Page 39 and 40: Oxidation and Hole Formation in Alu
Page 41 and 42: Effect of surface tension and energ
Page 43 and 44: A Computational Framework for Micro
Page 45 and 46: 45 ABSTRACTS
Page 47 and 48: It has been suggested that air bubb
Page 49 and 50: Fig. 2. Melting temperature vs part
Page 51 and 52: Quantifying the Effect of Pulsatile
Page 53 and 54: Error analysis for 3-D shape measur
Page 55 and 56: To test the effects of the ultrasou
Page 57 and 58: Surface Coverage and Hybridization
Page 59 and 60: Track 1 Horner Symposia 59 ABSTRACT
Page 61 and 62: A 3D Pseudo-Elastic Model for Mulli
Page 63 and 64: Analytical Solutions for the Onset
Page 65 and 66: References [1] J. D. Humphrey. Nati
Page 67 and 68: Analysis of Stiffness Variations in
Page 69 and 70:
Indentation of a Nonlinear Viscoela
Page 71 and 72:
Linear Theory for the Bending and S
Page 73 and 74:
Buckling and Finite Deformation of
Page 75 and 76:
Remarks on the Infinitesimal Stabil
Page 77 and 78:
finite characteristic dimensions, t
Page 79 and 80:
On Mathematics in Ray Ogden's Contr
Page 81 and 82:
Superposition of Finite-Amplitude S
Page 83 and 84:
Stability of Electro Active Polymer
Page 85 and 86:
Modelling of Electro-Viscoelasticit
Page 87 and 88:
The Vibration Induced Dissipative H
Page 89 and 90:
Arterial Modeling Considering the M
Page 91 and 92:
A Two-Scale Collagen Turn-Over Mode
Page 93 and 94:
Statistical Non-Linear Fibre-Reinfo
Page 95 and 96:
A Model of Growth and Mass Transfer
Page 97 and 98:
Reading the Mechanical Response of
Page 99 and 100:
Fundamental Solution in Plane Aniso
Page 101 and 102:
Simply Unreal: Grassmann Hypercompl
Page 103 and 104:
Influence of Fiber Dissolution and
Page 105 and 106:
On the electro-mechanical response
Page 107 and 108:
On the Importance of Counterion Con
Page 109 and 110:
Stewart Silling Sandia National Lab
Page 111 and 112:
On the Modeling of Rheological Beha
Page 113 and 114:
Acoustoelastic Measurement of Surfa
Page 115 and 116:
Time permitting, we consider the Ta
Page 117 and 118:
Effect of Nonlinearity on the Stead
Page 119 and 120:
Is Step-Flow Epitaxy Ever Stable? M
Page 121 and 122:
Entropy of a Constrained Hamiltonia
Page 123 and 124:
The Volume Derivative and Fracture
Page 125 and 126:
The Anomalous Behavior of Material
Page 127 and 128:
Energy Release Rate of Dielectric M
Page 129 and 130:
SYMPOSIUM 2-2 Cell Mechanics ORGANI
Page 131 and 132:
study to show the highly three-dime
Page 133 and 134:
Chemomechanics at the Cell-material
Page 135 and 136:
Interplay between Cell and Matrix S
Page 137 and 138:
A Coarse-Grain Molecular Dynamics M
Page 139 and 140:
Contact Mechanics of Circular Membr
Page 141 and 142:
Fibroblast Elongation, Dendritic Ex
Page 143 and 144:
Applying Controlled Loads to Single
Page 145 and 146:
An Overview of Vibro-Acoustography
Page 147 and 148:
Fracture between Molecules Kenneth
Page 149 and 150:
Investigation of Skull Hemorrhage a
Page 151 and 152:
Uncovering Morphological and Morpho
Page 153 and 154:
Microcantilever Based Aptameric Nan
Page 155 and 156:
Fluid-Structure Interaction Models
Page 157 and 158:
Anaylzing Range of Motion in Total
Page 159 and 160:
Direct Measurement of Plastic Dissi
Page 161 and 162:
The Influence of Screw Thread and T
Page 163 and 164:
Static Evaluation of Shear Loading
Page 165 and 166:
during 5000 test cycles, load drop
Page 167 and 168:
Nanomechanics of Tropocollagen and
Page 169 and 170:
Hip Implant Interfacial Motion, a F
Page 171 and 172:
Mapping Tibial Surface Strains usin
Page 173 and 174:
Bone Isotropy Characterization Unde
Page 175 and 176:
Effects of Anthropometric Geometry
Page 177 and 178:
On Stress Theory for Fractal Bodies
Page 179 and 180:
The Kinetic Relation as a Pivotal P
Page 181 and 182:
Creasing Instability in Soft Matter
Page 183 and 184:
Inverse Stress Analysis in AAA Cons
Page 185 and 186:
Experimental and Modeling Study to
Page 187 and 188:
Material Analysis for the Developme
Page 189 and 190:
Experimentally Verified Approach fo
Page 191 and 192:
A Long-Pulse Kolsky Bar Technique f
Page 193 and 194:
Active Porous Scaffolds for Control
Page 195 and 196:
Sensor Behavior of Magneto-Rheologi
Page 197 and 198:
Slipping Plane Plasticity using the
Page 199 and 200:
Internal Fluctuation of DNA in Nano
Page 201 and 202:
Carmel Majidi Harvard University, S
Page 203 and 204:
Coupling of Localized Buckling Defo
Page 205 and 206:
An Energy-Based Approach to Capture
Page 207 and 208:
A Theory of Actuation of Ionic Poly
Page 209 and 210:
Three-Dimensional Imaging of Crysta
Page 211 and 212:
In-situ Reconstruction of Tip-sampl
Page 213 and 214:
TRACK 3 Fluid Mechanics 213 ABSTRAC
Page 215 and 216:
Alan Wineman Comments on the Career
Page 217 and 218:
Numerical Solutions in Nonlinear Ma
Page 219 and 220:
Mathematical Modeling of a New Clas
Page 221 and 222:
Mixture Theory to Study Blood Flow
Page 223 and 224:
Phase Field Theory for Phase Transf
Page 225 and 226:
Nonlocal Gradient-Dependent Constit
Page 227 and 228:
On Unsteady Non-homogenous Flows of
Page 229 and 230:
Fluid Dynamics of the Deepwater Hor
Page 231 and 232:
SYMPOSIUM 3-2 Dynamics and Rheology
Page 233 and 234:
Modeling and Homogenization of Bact
Page 235 and 236:
Dynamics of a Semi-flexible Polar F
Page 237 and 238:
Dense Cellular Blood Flow in a Mode
Page 239 and 240:
Drag, Diffusive Motion, and Mixing
Page 241 and 242:
SYMPOSIUM 3-3 Experimental Fluid Me
Page 243 and 244:
Population, Characteristics and Kin
Page 245 and 246:
The Effect of Particle Concentratio
Page 247 and 248:
A Hybrid Simulation of Continuum an
Page 249 and 250:
An Experimental Study of Pulsed Mic
Page 251 and 252:
SYMPOSIUM 3-5 Fluid Issues in Renew
Page 253 and 254:
Influence of Cylinder Aspect Ratio
Page 255 and 256:
Numerical Investigation of Aerodyna
Page 257 and 258:
SYMPOSIUM 3-8 Multiphase Flow ORGAN
Page 259 and 260:
Three Dimensional Compressible Mult
Page 261 and 262:
Numerical Simulation of Gust Respon
Page 263 and 264:
SYMPOSIUM 4-1 Nanomechanics: Beyond
Page 265 and 266:
Nano Adhesion and Indentation Kenne
Page 267 and 268:
Atomistic Mechanisms of Cyclic Hard
Page 269 and 270:
Broadband Nanoindentation Spectrosc
Page 271 and 272:
Importance of AFM Beam Dynamics for
Page 273 and 274:
Quantitatively Exploring the Mechan
Page 275 and 276:
Effect of Scales and high Temperatu
Page 277 and 278:
Experimental and Model Developments
Page 279 and 280:
Controlled Carbon Nanotube Junction
Page 281 and 282:
Understanding the Influence of Stra
Page 283 and 284:
Temperature and Strain Rate Sensiti
Page 285 and 286:
The Influence of Chemical Substitut
Page 287 and 288:
Non-Uniqueness in Energy Minimizati
Page 289 and 290:
Coarse-Graining Atomistic Dynamics
Page 291 and 292:
simulations will also be discussed,
Page 293 and 294:
Dislocation Cores in Elastically An
Page 295 and 296:
SYMPOSIUM 4-3 Strain Rate Effects i
Page 297 and 298:
Dynamic-Tensile-Extrusion in Low Im
Page 299 and 300:
Wave Profile Shaping for Shock-Tube
Page 301 and 302:
SYMPOSIUM 4-4 Size Scale Effects in
Page 303 and 304:
Atomistic and Continuum Understandi
Page 305 and 306:
Physical Interpretation and Experim
Page 307 and 308:
Tensile Ductility and Plasticity Me
Page 309 and 310:
A New Nonlocal Shell Model for Axis
Page 311 and 312:
Effect of Surface Roughness and Fun
Page 313 and 314:
An Analysis of the Effects of Surfa
Page 315 and 316:
A SEM Image-based Finite Element Ap
Page 317 and 318:
SYMPOSIUM 4-5 Phase Transformations
Page 319 and 320:
Modeling and Simulation of Strain-i
Page 321 and 322:
Nanovoid Nucleation Inside Elastopl
Page 323 and 324:
Molecular Dynamics Study of Thermal
Page 325 and 326:
Effect of Surface Tension and Energ
Page 327 and 328:
A bi-crystal Aggregate Model of Mar
Page 329 and 330:
SYMPOSIUM 4-6 Multifunctional Compo
Page 331 and 332:
Electrified Carbon Fiber Polymer Ma
Page 333 and 334:
Thermal and Mechanical Properties o
Page 335 and 336:
Carbon Nanotube Buckypaper Material
Page 337 and 338:
Effective Parameters of Bucky Gel M
Page 339 and 340:
Influence of Surface Roughness and
Page 341 and 342:
Microvascular Networks for Thermal
Page 343 and 344:
Henghua Jin University of Illinois
Page 345 and 346:
A High Temperature Cured Structural
Page 347 and 348:
Autonomic Structural Cooling via Ad
Page 349 and 350:
Pressurized Vascular Systems for He
Page 351 and 352:
Photovoltaic Waveguide Polymer Comp
Page 353 and 354:
Effect of Silane Coupling Agent on
Page 355 and 356:
Crushing Behavior of Composite Hexa
Page 357 and 358:
Degradation Kinetics of Aerospace W
Page 359 and 360:
Multiscale Modeling of Micro/nano S
Page 361 and 362:
[1] Y.A. HUANG, Z. YIN, A. TESFAMIC
Page 363 and 364:
Quantitative Nondestructive Evaluat
Page 365 and 366:
A Multiscale Model of Rate Dependen
Page 367 and 368:
Localization Analysis of Porous Met
Page 369 and 370:
Negative Stiffness and Negative Poi
Page 371 and 372:
Failure Surfaces for Fiber-Reinforc
Page 373 and 374:
Nonlocal Boundary Layer Method for
Page 375 and 376:
An Exact Solution for History-Depen
Page 377 and 378:
Development of an Internal State Va
Page 379 and 380:
A Study of Highly Crosslinked Epoxy
Page 381 and 382:
Convergence and Scaling in Peridyna
Page 383 and 384:
Graphene Fracture Kyug-Suk Kim Brow
Page 385 and 386:
A Computational Framework for Micro
Page 387 and 388:
Measurement of Mechanical Propertie
Page 389 and 390:
The Role of Electrons in Nanostruct
Page 391 and 392:
Thermoresponsive Microcapsules for
Page 393 and 394:
Elastic Softening of Amorphous and
Page 395 and 396:
Autonomic Restoration of Conductivi
Page 397 and 398:
Response of Composite Structures to
Page 399 and 400:
Lateral Vibration of a Travelling T
Page 401 and 402:
Shear Activation of Mechanophore-Li
Page 403 and 404:
Cooling Effects on the Vibronic Ban
Page 405 and 406:
Dynamoic Damage Tolerance of Aerona
Page 407 and 408:
SYMPOSIUM 4-13 Laser and Multi-Ener
Page 409 and 410:
Ab initio Simulation of Photo-disso
Page 411 and 412:
Laser Texturing of Polyimide for Al
Page 413 and 414:
Surface Modification of Titanium Vi
Page 415 and 416:
Coating Deposition via Insertion of
Page 417 and 418:
Laser Resonant Vibrational Excitati
Page 419 and 420:
Femtosecond Laser Fabrication of Ne
Page 421 and 422:
Multi-fluid Model of Early-stage Fe
Page 423 and 424:
Track 6 Nondestructive Evaluation o
Page 425 and 426:
Developments in Testing and Health
Page 427 and 428:
High Volume, Remote Sensing, Non-in
Page 429 and 430:
Development and Application of Magn
Page 431 and 432:
A Performance Measure for Ceramic A
Page 433 and 434:
Probing Acoustic Nonlinearity using
Page 435 and 436:
Ultrasonics of Periodic Structures
Page 437 and 438:
Nanoscale Interfacial Probing of Ru
Page 439 and 440:
Laser Ultrasonic Thermometry for In
Page 441 and 442:
Physics-based Analysis of Infrared
Page 443 and 444:
Acoustic Characteristics Measuremen
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