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Andres Tovar
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Journal Articles

Evaluation of Neural Network-Based Derivatives for Topology Optimization

Joel Najmon, Andres Tovar
Journal: Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. July 2024, 146(7): 071704.
Paper No: MD-23-1483
https://doi.org/10.1115/1.4064243
Published Online: January 29, 2024
View Article titled, Evaluation of Neural Network-Based Derivatives for Topology Optimization
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Topics: Artificial neural networks, Design, Topology, Topology optimization, Optimization
Proceedings Papers

Comparing Derivatives of Neural Networks for Regression

Joel C. Najmon, Andres Tovar
Proc. ASME. IDETC-CIE2023, Volume 3B: 49th Design Automation Conference (DAC), V03BT03A015, August 20–23, 2023
Publisher: American Society of Mechanical Engineers
Paper No: DETC2023-117571
https://doi.org/10.1115/DETC2023-117571
View Paper titled, Comparing Derivatives of Neural Networks for Regression
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Topics: Approximation, Artificial neural networks
Journal Articles

Multi-Objective Bayesian Optimization Supported by an Expected Pareto Distance Change

Homero Valladares, Andres Tovar
Journal: Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. October 2023, 145(10): 101705.
Paper No: MD-22-1758
https://doi.org/10.1115/1.4062789
Published Online: July 19, 2023
View Article titled, Multi-Objective Bayesian Optimization Supported by an Expected Pareto Distance Change
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Topics: Design, Optimization, Regression models, Pareto optimization, Composite materials
Proceedings Papers

Multi-Objective Bayesian Optimization Supported by Gaussian Process Classifiers and Conditional Probabilities

Homero Valladares, Andres Tovar
Proc. ASME. IDETC-CIE2022, Volume 3B: 48th Design Automation Conference (DAC), V03BT03A039, August 14–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: DETC2022-91343
https://doi.org/10.1115/DETC2022-91343
View Paper titled, Multi-Objective Bayesian Optimization Supported by Gaussian Process Classifiers and Conditional Probabilities
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Topics: Composite materials, Optimization, Probability
Proceedings Papers

Multiscale Topology Optimization With Gaussian Process Regression Models

Joel C. Najmon, Homero Valladares, Andres Tovar
Proc. ASME. IDETC-CIE2021, Volume 3B: 47th Design Automation Conference (DAC), V03BT03A001, August 17–19, 2021
Publisher: American Society of Mechanical Engineers
Paper No: DETC2021-66758
https://doi.org/10.1115/DETC2021-66758
View Paper titled, Multiscale Topology Optimization With Gaussian Process Regression Models
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Topics: Optimization, Regression models, Topology
Journal Articles

Mechatronic Design and Active Disturbance Rejection Control of a Bag Valve-Based Mechanical Ventilator

Jaime Arcos-Legarda, Andres Tovar
Journal: Journal of Medical Devices
Publisher: ASME
Article Type: Research-Article
J. Med. Devices. September 2021, 15(3): 031006.
Paper No: MED-20-1176
https://doi.org/10.1115/1.4051064
Published Online: May 27, 2021
View Article titled, Mechatronic Design and Active Disturbance Rejection Control of a Bag Valve-Based Mechanical Ventilator
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Topics: Design, Pressure, Valves, Ventilation, Lung, Engineering prototypes, Actuators, Compression, Hardware
Proceedings Papers

A Simple and Effective Methodology to Perform Multi-Objective Bayesian Optimization: An Application in the Design of Sandwich Composite Armors for Blast Mitigation

Homero Valladares, Andres Tovar
Proc. ASME. IDETC-CIE2020, Volume 11A: 46th Design Automation Conference (DAC), V11AT11A056, August 17–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: DETC2020-22564
https://doi.org/10.1115/DETC2020-22564
View Paper titled, A Simple and Effective Methodology to Perform Multi-Objective Bayesian Optimization: An Application in the Design of Sandwich Composite Armors for Blast Mitigation
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Topics: Composite materials, Design, Optimization
Proceedings Papers

A Parametric Study on the Effects of Reynolds Number on the Topology Optimization of Navier-Stokes Flows

Joel C. Najmon, Tong Wu, Andres Tovar
Proc. ASME. IDETC-CIE2020, Volume 11A: 46th Design Automation Conference (DAC), V11AT11A059, August 17–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: DETC2020-22690
https://doi.org/10.1115/DETC2020-22690
View Paper titled, A Parametric Study on the Effects of Reynolds Number on the Topology Optimization of Navier-Stokes Flows
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Topics: Darcy's law, Flow (Dynamics), Optimization, Reynolds number, Sensitivity analysis, Topology
Proceedings Papers

Topology Optimization of Plastic Parts for Injection Molding

Kathryn Oliver, Sohel Anwar, Andres Tovar
Proc. ASME. IMECE2019, Volume 14: Design, Systems, and Complexity, V014T14A021, November 11–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2019-11069
https://doi.org/10.1115/IMECE2019-11069
View Paper titled, Topology Optimization of Plastic Parts for Injection Molding
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Topics: Injection molding, Manufacturing, Optimization, Topology, Casting, Extruding, Additive manufacturing, Conceptual design, Design, Finite element analysis
Proceedings Papers

Optimal Design for Deployable Structures Using Origami Tessellations

Carolina Cardona, Andres Tovar, Sohel Anwar
Proc. ASME. IMECE2019, Volume 4: Dynamics, Vibration, and Control, V004T05A021, November 11–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2019-11062
https://doi.org/10.1115/IMECE2019-11062
View Paper titled, Optimal Design for Deployable Structures Using Origami Tessellations
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Topics: Design, Optimization, Algorithms, Design methodology, Natural disasters, Origami-inspired design, Theorems (Mathematics), Tiles, Topology
Proceedings Papers

Thermomechanical Topology Optimization of Lattice Heat Transfer Structure Including Natural Convection and Design Dependent Heat Source

Tong Wu, Joel C. Najmon, Andres Tovar
Proc. ASME. IDETC-CIE2019, Volume 2A: 45th Design Automation Conference, V02AT03A056, August 18–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: DETC2019-97628
https://doi.org/10.1115/DETC2019-97628
View Paper titled, Thermomechanical Topology Optimization of Lattice Heat Transfer Structure Including Natural Convection and Design Dependent Heat Source
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Topics: Design, Heat, Heat transfer, Natural convection, Optimization, Thermomechanics, Topology
Journal Articles

Design for Crashworthiness of Categorical Multimaterial Structures Using Cluster Analysis and Bayesian Optimization

Kai Liu, Tong Wu, Duane Detwiler, Jitesh Panchal, Andres Tovar
Journal: Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. December 2019, 141(12): 121701.
Paper No: MD-19-1029
https://doi.org/10.1115/1.4044838
Published Online: September 26, 2019
View Article titled, Design for Crashworthiness of Categorical Multimaterial Structures Using Cluster Analysis and Bayesian Optimization
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Topics: Design, Optimization, Conceptual design, Algorithms, Structural optimization
Proceedings Papers

Optimal Mechatronic Design of a Quadruped Robot With Compliant Legs

Jaime Arcos-Legarda, Khunsa Hisham, Sohel Anwar, Andres Tovar
Proc. ASME. IMECE2018, Volume 4A: Dynamics, Vibration, and Control, V04AT06A032, November 9–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2018-88055
https://doi.org/10.1115/IMECE2018-88055
View Paper titled, Optimal Mechatronic Design of a Quadruped Robot With Compliant Legs
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Topics: Design, Robots, Actuators, Generators, Feedback, Additive manufacturing, Control systems, Degrees of freedom, Kinematics, Polynomials
Proceedings Papers

Design for Additive Manufacturing of Conformal Cooling Channels Using Thermal-Fluid Topology Optimization and Application in Injection Molds

Tong Wu, Andres Tovar
Proc. ASME. IDETC-CIE2018, Volume 2B: 44th Design Automation Conference, V02BT03A007, August 26–29, 2018
Publisher: American Society of Mechanical Engineers
Paper No: DETC2018-85511
https://doi.org/10.1115/DETC2018-85511
View Paper titled, Design for Additive Manufacturing of Conformal Cooling Channels Using Thermal-Fluid Topology Optimization and Application in Injection Molds
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Topics: Additive manufacturing, Cooling, Design, Optimization, Thermofluids, Topology, Conceptual design, Cooling systems, Flow (Dynamics), Algorithms
Journal Articles

Special Issue: Design of Engineered Materials and Structures

Raymundo Arroyave, James Guest, Carolyn Conner Seepersad, Andres Tovar, Yan Wang
Journal: Journal of Mechanical Design
Publisher: ASME
Article Type: Editorial
J. Mech. Des. November 2018, 140(11): 110301.
Paper No: MD-18-1625
https://doi.org/10.1115/1.4041254
Published Online: September 18, 2018
View Article titled, Special Issue: Design of Engineered Materials and Structures
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Topics: Design, Optimization
Journal Articles

Cluster-Based Optimization of Cellular Materials and Structures for Crashworthiness

Kai Liu, Duane Detwiler, Andres Tovar
Journal: Journal of Mechanical Design
Publisher: ASME
Article Type: Research-Article
J. Mech. Des. November 2018, 140(11): 111412.
Paper No: MD-18-1219
https://doi.org/10.1115/1.4040960
Published Online: September 10, 2018
View Article titled, Cluster-Based Optimization of Cellular Materials and Structures for Crashworthiness
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Topics: Conceptual design, Design, Optimization, Crashworthiness
Proceedings Papers

Towards the Optimal Crown-to-Implant Ratio in Dental Implants

T. J. Sego, Yung-Ting Hsu, Tien-Min Gabriel Chu, Andres Tovar
Proc. ASME. IDETC-CIE2017, Volume 3: 19th International Conference on Advanced Vehicle Technologies; 14th International Conference on Design Education; 10th Frontiers in Biomedical Devices, V003T13A009, August 6–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: DETC2017-67889
https://doi.org/10.1115/DETC2017-67889
View Paper titled, Towards the Optimal Crown-to-Implant Ratio in Dental Implants
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Topics: Biological tissues, Biomechanics, Deformation, Finite element model, Mechanical stability, Stability
Proceedings Papers

Structural Optimization of Injection Molds With Lattice Cooling

Tong Wu, Namrata Upadhyaya, Douglas Acheson, Andres Tovar
Proc. ASME. IDETC-CIE2017, Volume 2B: 43rd Design Automation Conference, V02BT03A008, August 6–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: DETC2017-67975
https://doi.org/10.1115/DETC2017-67975
View Paper titled, Structural Optimization of Injection Molds With Lattice Cooling
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Topics: Cooling, Structural optimization, Porosity, Additive manufacturing, Convection, Design, Equipment performance, Heat, Bulk modulus, Elasticity
Proceedings Papers

Force Diverting Helmet Liner Achieved Through a Lattice of Multi-Material Compliant Mechanisms

Vaibhav Gokhale, Prasad Tapkir, Andres Tovar
Proc. ASME. IDETC-CIE2017, Volume 2B: 43rd Design Automation Conference, V02BT03A005, August 6–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: DETC2017-67684
https://doi.org/10.1115/DETC2017-67684
View Paper titled, Force Diverting Helmet Liner Achieved Through a Lattice of Multi-Material Compliant Mechanisms
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Topics: Compliant mechanisms, Design, Sports, Stress, Crashworthiness, Engineering simulation, Finite element analysis, Gears, Hinges, Impact testing
Journal Articles

Special Issue: Design of Engineered Materials and Structures

Carolyn Seepersad, Raymundo Arroyave, Guest James, Andres Tovar, Yan Wang
Journal: Journal of Mechanical Design
Publisher: ASME
Article Type: Announcements
J. Mech. Des. December 2017, 139(12): 128001.
Paper No: MD-17-1645
https://doi.org/10.1115/1.4038057
Published Online: October 12, 2017
View Article titled, Special Issue: Design of Engineered Materials and Structures
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Topics: Design, Simulation, Optimization