Composite StructuresPub Date : 2026-04-15Epub Date: 2026-01-14DOI: 10.1016/j.compstruct.2026.120062
Xiaokai Yin, Hongyu Cui, Haoming Hu, Huanqiu Xu, Tiange Yang
{"title":"Design and mechanical characterization of novel triply periodic minimal surface-based lattice structures with high strength and energy absorption","authors":"Xiaokai Yin, Hongyu Cui, Haoming Hu, Huanqiu Xu, Tiange Yang","doi":"10.1016/j.compstruct.2026.120062","DOIUrl":"10.1016/j.compstruct.2026.120062","url":null,"abstract":"<div><div>Lightweight lattice structures have become optimal candidates for structural load-bearing and energy-absorbing applications, owing to their high specific strength and superior energy absorption. Nevertheless, conventional stretch-dominated and bending-dominated lattice structures inherently trade off mechanical properties for deformation stability. Recent advancements highlight the exceptional mechanical properties of triply periodic minimal surface (TPMS)-based lattice structures, attributable to their distinctive topological configurations. This research introduces a novel skeletal lattice (NSL) based on TPMS topology to address the performance deficiencies of traditional lattices. Samples were fabricated via selective laser melting (SLM) technology, and their stress–strain responses and deformation characteristics were analyzed through quasi-static compression tests. Coupling experimental results with finite element modeling enabled a comprehensive assessment of the lattice’s compressive mechanical behavior, elucidating its deformation mechanisms. Findings reveal NSL significantly outperforms conventional lattices in specific energy absorption, specific strength, and crushing load efficiency—improving 573.2 %, 305.7 %, and 33.9 % over body-centered cubic (BCC), and 221.3 %, 7.2 %, and 157.0 % relative to Octet. This structural innovation successfully mitigates the inherent performance trade-offs of traditional lattice designs, realizing concurrent enhancements in mechanical strength, energy absorption, and deformation stability. The proposed NSL structure demonstrates broad applicability within engineering domains, including lightweight load-bearing components and high-performance energy-absorbing materials.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"382 ","pages":"Article 120062"},"PeriodicalIF":7.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Composite StructuresPub Date : 2026-04-15Epub Date: 2026-01-20DOI: 10.1016/j.compstruct.2026.120082
Yuanhao Xia , Yiping Zhao , Dongsheng Li , Zeyu Sun , Yu Gao , Dengteng Ge , Lili Yang
{"title":"Enhanced energy absorption of CF/PEEK tube via a novel wrapping-braiding-hot pressing method","authors":"Yuanhao Xia , Yiping Zhao , Dongsheng Li , Zeyu Sun , Yu Gao , Dengteng Ge , Lili Yang","doi":"10.1016/j.compstruct.2026.120082","DOIUrl":"10.1016/j.compstruct.2026.120082","url":null,"abstract":"<div><div>Thermoplastic composite tubes are widely used in aerospace and transportation for their high strength-to-weight ratio, excellent energy absorption, design flexibility and high-temperature stability, serving as key crash-energy absorbers in automotive and aerospace structures. However, fabricating low-density tubes with high energy absorption and clarifying their failure mechanisms remain challenging. Herein, a novel wrapping-braiding-hot pressing process is reported for continuous carbon-fiber reinforced polyetheretherketone (CCF/PEEK) tubes with ultra-low density (0.5–0.6 g/cm<sup>3</sup>) and high specific energy absorption (SEA, 55.8 kJ/kg). PEEK powder impregnation and filament wrapping enhance fiber-resin wetting. Under quasi-static compression conditions, axial yarn reinforcement boosts performance: tubes with 14 axial yarns exhibit 77.5% higher total energy absorption (EA) and 53.3% higher SEA than those without axial yarns. At 170 °C, the compressive performance and SEA retention exceed 95%. X-ray computed tomography reveals failure modes including braid rupture, prepreg fracture, matrix cracking and delamination, providing a novel strategy for high-performance thermoplastic composite tube fabrication.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"382 ","pages":"Article 120082"},"PeriodicalIF":7.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146006594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Composite StructuresPub Date : 2026-04-15Epub Date: 2026-01-20DOI: 10.1016/j.compstruct.2026.120085
Wenxuan Xia, Erkan Oterkus, Selda Oterkus
{"title":"Three-dimensional computational homogenization of cracked composite materials using state-based peridynamics and MPI parallelization","authors":"Wenxuan Xia, Erkan Oterkus, Selda Oterkus","doi":"10.1016/j.compstruct.2026.120085","DOIUrl":"10.1016/j.compstruct.2026.120085","url":null,"abstract":"<div><div>This paper presents a scalable three-dimensional computational framework for the homogenization of cracked composite materials using the ordinary state-based peridynamic formulation. The method integrates a generalized bond-breaking algorithm, based on a modified Möller–Trumbore raytracing scheme, which transforms arbitrary crack surfaces into triangle mesh representations, enabling robust and geometry-independent fracture detection. Volumetric periodic boundary conditions are implemented to ensure energetic consistency and compatibility with the Hill–Mandel macro-homogeneity condition.</div><div>To address the substantial computational cost of 3D nonlocal models, the framework employs MPI-based domain decomposition combined with PETSc iterative solvers, achieving strong parallel scalability for representative volume elements (RVEs) containing millions of material points. Numerical experiments on fiber-reinforced composite RVEs, both intact and pre-cracked, demonstrate the framework’s ability to capture complex three-dimensional fracture patterns and accurately predict effective stiffness properties.</div><div>The proposed approach offers a robust, general purpose, and high performance solution for microscale fracture analysis and homogenization in composite materials, with potential applicability to broader classes of heterogeneous and damage-prone materials.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"382 ","pages":"Article 120085"},"PeriodicalIF":7.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Composite StructuresPub Date : 2026-04-15Epub Date: 2026-01-17DOI: 10.1016/j.compstruct.2026.120078
Yanchu Chen , Hui Guo , Pei Sun , Shuang Huang , Yansong Wang , Xiaolong Xie
{"title":"Performance study of high load-bearing and low-frequency vibration-isolating ligament-oscillator star-shaped honeycomb metamaterial","authors":"Yanchu Chen , Hui Guo , Pei Sun , Shuang Huang , Yansong Wang , Xiaolong Xie","doi":"10.1016/j.compstruct.2026.120078","DOIUrl":"10.1016/j.compstruct.2026.120078","url":null,"abstract":"<div><div>The application of honeycomb metamaterials in low-frequency vibration isolation is limited by the mass law. To overcome the limitation, two innovative designs are proposed: a ligament-reinforced self-similar star-shaped honeycomb metamaterial (LSSHM) and a ligament-oscillator star-shaped honeycomb metamaterial (LSHM). Their load-bearing and vibration isolation properties are investigated through equivalent models, simulations, and experiments. Results show that the LSHM increases the compressive load capacity by 244 % over the original star-shaped honeycomb metamaterial (OSHM) and exhibits a complete bandgap (BG) from 371 to 797 Hz (426 Hz bandwidth). Parametric analysis indicates that ligament angle and thickness provide effective means for the dual tuning of structural stiffness and BG properties. This work provides a viable design strategy for multifunctional metamaterials that integrate these two critical properties.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"382 ","pages":"Article 120078"},"PeriodicalIF":7.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Composite StructuresPub Date : 2026-04-15Epub Date: 2026-01-24DOI: 10.1016/j.compstruct.2026.120099
Jiahui Wei , Yifan Zhang , Xiaojia Wu , Dianshen Li , Qiwei Guo , Daijun Zhang , Chao Li , Yanfeng Liu , Pengfei Jiang , Yingjie Yan , Junhua Guo , Yanan Jiao , Li Chen
{"title":"Vibration fatigue behavior and failure mechanism of 3D layer-to-layer interlock woven composites","authors":"Jiahui Wei , Yifan Zhang , Xiaojia Wu , Dianshen Li , Qiwei Guo , Daijun Zhang , Chao Li , Yanfeng Liu , Pengfei Jiang , Yingjie Yan , Junhua Guo , Yanan Jiao , Li Chen","doi":"10.1016/j.compstruct.2026.120099","DOIUrl":"10.1016/j.compstruct.2026.120099","url":null,"abstract":"<div><div>3D layer-to-layer interlock woven composites (3D LTLIWCs) are inevitably subjected to the severe cyclic vibration fatigue environment in the application of aero-engine structures and their durability should be proven. In this paper, three 3D LTLIWCs with different preform structure types are prepared by adjusting warp interlacing frequency. First-order cantilever bending resonance tests are conducted at four stress levels to evaluate dynamic response. The characterization capabilities of two fatigue life models are compared. The interrupted fatigue tests incorporating with optical microscopy and micro-computed tomography are employed to illustrate damage evolution. The results show that the fatigue life of 3D LTLIWCs decreases gradually with increasing stress levels. However, due to its lowest warp interlacing frequency, the SS structure effectively dissipates and transfers fatigue stress, resulting in the longest fatigue life among all structures. The frequency degradation occurs in three phases: stable, linear, and accelerating. Compared to the Basquin model, the Weibull model demonstrates superior fitting capability and predictive accuracy, and is used to was used to estimate the stress limit values of PS, TS, and SS that can withstand 10<sup>7</sup> cycles without failure, which are 125 MPa, 134 MPa, and 173 MPa respectively. The damage undergoes an evolution process involving matrix cracking, interfacial debonding, fiber bundle splitting, and yarn fracture. Besides, the interfacial debonding length of SS is longer than that of PS and TS, but its warps is not prone to catastrophic shear fracture and the overall damage degree is low.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"382 ","pages":"Article 120099"},"PeriodicalIF":7.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Composite StructuresPub Date : 2026-04-15Epub Date: 2026-01-29DOI: 10.1016/j.compstruct.2026.120102
R.S. Chahar , T. Mukhopadhyay
{"title":"Bayesian uncertainty quantification of residual mechanical properties post lightning strike: Stochastic multi-physical simulations of composite laminates including spatially-random void distribution","authors":"R.S. Chahar , T. Mukhopadhyay","doi":"10.1016/j.compstruct.2026.120102","DOIUrl":"10.1016/j.compstruct.2026.120102","url":null,"abstract":"<div><div>Structural integrity of composite laminates can be significantly affected by damage resulting from lightning strikes. Accurately quantifying the residual strength and stiffness post-lightning strike, while accounting for inevitable compound uncertainties in temperature-dependent material properties due to manufacturing irregularities, defects such as random voids and stochastic lightning current parameters, is crucial for ensuring the operational safety of key composite structural components in aircraft. Here, we introduce a Bayesian inference-driven stochastic framework that integrates finite element-based hybrid thermal–electrical–mechanical simulations for uncertainty quantification in residual mechanical properties of composite laminates, wherein the parameters are estimated based on Markov chain Monte Carlo approach along with the Gibbs sampling algorithm. The inherent disadvantages concerning over-fitting and dealing with extraordinarily high-dimensional input parameter space in traditional surrogate-based Monte Carlo simulation methods for uncertainty quantification can be averted through the current approach. To obtain adequate confidence in the presented uncertainty quantification results, the probabilistic descriptions and B-basis design allowable obtained using the current Bayesian approach are compared with full-scale Monte Carlo simulations and classical non-parametric Bootstrap method. The maximum likelihood estimation-based machine learning model is further exploited for global sensitivity analysis to assess the relative influence of various governing parameters on residual mechanical properties post-lightning strike.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"382 ","pages":"Article 120102"},"PeriodicalIF":7.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Composite StructuresPub Date : 2026-04-15Epub Date: 2026-01-20DOI: 10.1016/j.compstruct.2026.120083
Mujahed Alsomiri , Yiyi Zhou , Yi Min Xie , Xubo Zhang
{"title":"Concurrent topology and fiber orientation optimization of short‑fiber reinforced cementitious composites using the BESO method and anisotropic Drucker-Prager criterion","authors":"Mujahed Alsomiri , Yiyi Zhou , Yi Min Xie , Xubo Zhang","doi":"10.1016/j.compstruct.2026.120083","DOIUrl":"10.1016/j.compstruct.2026.120083","url":null,"abstract":"<div><div>Topology optimization of anisotropic short‑fiber-reinforced cementitious composites (SFRCC) remains a challenging task due to their complex behavior and failure modes. This study presents a novel concurrent optimization framework for SFRCC that simultaneously optimizes structural topology and short fiber orientations. The approach extends the bi-directional evolutionary structural optimization (BESO) method to handle cementitious composites with direction-dependent properties, pressure–sensitivity, and tension–compression asymmetry through a formulated anisotropic Drucker-Prager (ADP) criterion. Fiber orientations are biased towards evolving load paths for maximum efficiency and bounded by manufacturing-aware feasible deviations. The optimization model minimizes a global <em>p</em>‑norm aggregation of element‑wise ADP failure indices, with sensitivities derived via adjoint analysis for both topology and fiber orientation variables. The update schemes for the topology and fibers are implemented by an iterative alternating optimization algorithm. The effectiveness of the proposed approach is demonstrated using several benchmark examples. The impacts of the design and initialization parameters are systematically examined, providing insights into the topological responses under varied conditions. The results show that the approach yields stable, robust, and structurally efficient designs, serving as a practical design tool for SFRCC structures with tailored anisotropy.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"382 ","pages":"Article 120083"},"PeriodicalIF":7.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Composite StructuresPub Date : 2026-04-15Epub Date: 2026-01-24DOI: 10.1016/j.compstruct.2026.120103
Trong Khanh Huy Nguyen , Van Thuong Nguyen , Van Luan Nguyen , Xuan Thanh Nguyen
{"title":"Pin-loaded hole contact in anisotropic multi-layered/functionally graded composite plate","authors":"Trong Khanh Huy Nguyen , Van Thuong Nguyen , Van Luan Nguyen , Xuan Thanh Nguyen","doi":"10.1016/j.compstruct.2026.120103","DOIUrl":"10.1016/j.compstruct.2026.120103","url":null,"abstract":"<div><div>Pin-loaded joints in anisotropic multilayered/functionally graded materials (FGMs) are a challenging contact problem due to the combination of the nonlinearity of the contact and the anisotropy and spatial variation of material properties. To address this challenging problem, a new contact boundary-based finite element method (contact-BFEM) is developed to model the contact between a rigid cylindrical pin and an anisotropic multilayered/FGM plate. The contact BFEM allows for various configurations, including loose, transition, and interference fits, by permitting differences between the pin and hole radii. The anisotropic multilayered/functionally graded material plate is approximated by <em>N</em> anisotropic sub-layers, with material properties varying in the radial direction according to prescribed gradation rules. Contact constraints are rigorously enforced at discrete contact nodes and resolved through an iterative procedure. The proposed method is validated through comparison with existing methods in the literature. Its flexibility enables comprehensive parametric studies involving different types of multilayered and FGM materials. The numerical results also allow for the investigation of a wide range of influencing factors, including pin size, friction coefficient, insert or fastener material, adhesive layer thickness, auxetic behavior, and gradation properties on the contact and mechanical responses of pin-loaded joints in a multilayered/FGM plate.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"382 ","pages":"Article 120103"},"PeriodicalIF":7.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Composite StructuresPub Date : 2026-04-15Epub Date: 2026-01-28DOI: 10.1016/j.compstruct.2026.120061
Shreya Shukla, Sanjeev A. Sahu
{"title":"Dynamic tuning of shear horizontal waves in flexoelectric–piezoelectric composites with imperfect interfaces on semiconductor substrates","authors":"Shreya Shukla, Sanjeev A. Sahu","doi":"10.1016/j.compstruct.2026.120061","DOIUrl":"10.1016/j.compstruct.2026.120061","url":null,"abstract":"<div><div>Shear horizontal (SH) wave propagation in smart composite structures offers significant potential for acoustic device applications, but current structures with dielectric substrates lack means for active tuning. This study addresses this limitation by analytically identifying new physical regimes that emerge from the combined effects of flexoelectric gradients, mobile semiconductor carriers, and interfacial imperfections. SH wave dispersion and attenuation are investigated for a flexoelectric-piezoelectric layer on an n-type piezoelectric semiconductor half-space with a mechanically imperfect interface. The operator elimination technique is employed to solve the governing differential equations and obtain explicit, closed-form solutions under electrically open and shorted boundary conditions. Results reveal an interfacial compliance range <span><math><mrow><mo>(</mo><mi>m</mi><mo>≈</mo><mn>8</mn><mspace></mspace><mtext>to</mtext><mspace></mspace><mn>12</mn><mo>)</mo></mrow></math></span> beyond which additional stiffness yields limited phase velocity gains and stabilized attenuation. This observation indicates a saturation regime in interface effects. A thickness-dependent crossover also emerges where ultra-thin films are dominated by flexoelectric gradients resulting in higher losses, whereas in thicker films, enhanced carrier dynamics lead to increased phase velocity and reduced attenuation. The analytical formulation is further corroborated through independent numerical validation, confirming the reliability of the proposed multiphysics framework.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"382 ","pages":"Article 120061"},"PeriodicalIF":7.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Composite StructuresPub Date : 2026-04-01Epub Date: 2026-01-02DOI: 10.1016/j.compstruct.2025.120035
Marco Amabili
{"title":"An accurate model for nonlinear forced vibrations of higher-order and Timoshenko cantilever beams","authors":"Marco Amabili","doi":"10.1016/j.compstruct.2025.120035","DOIUrl":"10.1016/j.compstruct.2025.120035","url":null,"abstract":"<div><div>An accurate higher-order model for planar nonlinear vibrations of cantilever beams is developed, taking into account nonlinear terms in (i) transverse displacement, (ii) longitudinal displacement, and (iii) rotation, as well as geometric imperfections, shear deformation, and rotary inertia. The model can be reduced to the Timoshenko beam theory, which is a first-order model, when neglecting higher-order terms. It is quite significant that the discretization is obtained by series expansions that satisfy both geometric (essential) and natural boundary conditions. A validation of the present model and a detailed convergence analysis are presented. It is crucial to adopt a proper expansion of the longitudinal displacement, which also satisfies the natural boundary condition of zero longitudinal force at the beam’s tip. Expansions that do not satisfy this boundary condition do not converge and result in over-predicting the system nonlinearity. Results show a very weak hardening-type nonlinearity for cantilever beams. In the case of geometric imperfections in the shape of the fundamental mode, an increase in the natural frequency and in the nonlinearity is observed, as well as differences in the time domain response of the generalized coordinates.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"381 ","pages":"Article 120035"},"PeriodicalIF":7.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}