Recent ucbsemm items

Experimental and Theoretical Studies on Stress Relaxation of Concrete Under Uniaxial Compressive Strain

Thu, 11 Dec 2025 00:00:00 +0000

Experimental and Theoretical Studies on Stress Relaxation of Concrete Under Uniaxial Compressive Strain

Annual Temperature Cycle in Oroville Reservoir

Thu, 11 Dec 2025 00:00:00 +0000

Annual Temperature Cycle in Oroville Reservoir

Studies of Concrete for Arkansas Nuclear One Reactor Building

Thu, 11 Dec 2025 00:00:00 +0000

Studies of Concrete for Arkansas Nuclear One Reactor Building

A Phenomenological Model of an Elastomer with an Evolving Molecular Weight Distribution

Thu, 11 Dec 2025 00:00:00 +0000

A Phenomenological Model of an Elastomer with an Evolving Molecular Weight Distribution

On dual conservation laws in elasticity : stress function formalism

Thu, 11 Dec 2025 00:00:00 +0000

On dual conservation laws in elasticity : stress function formalism

Second Studies of Concrete for Wolf Creek Kansas Gas and Electric Company Post Tensioned Reactor Building, Final Report

Thu, 11 Dec 2025 00:00:00 +0000

Second Studies of Concrete for Wolf Creek Kansas Gas and Electric Company Post Tensioned Reactor Building, Final Report

Durability and Integrity of Marble

Thu, 11 Dec 2025 00:00:00 +0000

Durability and Integrity of Marble

Preliminary Ambient Vibration Analysis of the Bay Bridge

Thu, 11 Dec 2025 00:00:00 +0000

Preliminary Ambient Vibration Analysis of the Bay Bridge

An Efficient Algorithm for Second-Order Reliability Analysis

Thu, 11 Dec 2025 00:00:00 +0000

An Efficient Algorithm for Second-Order Reliability Analysis

Operator Split Methods in the Numerical Solution of the Finite Deformation Elastoplastic Dynamic Problem

Thu, 11 Dec 2025 00:00:00 +0000

Operator Split Methods in the Numerical Solution of the Finite Deformation Elastoplastic Dynamic Problem

Studies of Concrete for Rancho Seco Containment Vessel

Thu, 11 Dec 2025 00:00:00 +0000

Studies of Concrete for Rancho Seco Containment Vessel

The Propagation of Shock Waves in Semilinear Viscoelastic Materials

Thu, 11 Dec 2025 00:00:00 +0000

The Propagation of Shock Waves in Semilinear Viscoelastic Materials

Automated Minimum Cost Design of Single Span Prestressed Concrete Box Girder Bridges

Thu, 11 Dec 2025 00:00:00 +0000

Automated Minimum Cost Design of Single Span Prestressed Concrete Box Girder Bridges

Investigations on Cement Additives for Delayed Expansion in Mass Concrete

Thu, 11 Dec 2025 00:00:00 +0000

Investigations on Cement Additives for Delayed Expansion in Mass Concrete

Structural Model Investigations for Ross High Dam - Model 1, Ross High Dam

Thu, 11 Dec 2025 00:00:00 +0000

Structural Model Investigations for Ross High Dam - Model 1, Ross High Dam

Structural Behavior of a 48 Inch Diameter Pipe Under Combined Loading

Thu, 11 Dec 2025 00:00:00 +0000

Structural Behavior of a 48 Inch Diameter Pipe Under Combined Loading

Effective stiffness for damaged plates

Thu, 11 Dec 2025 00:00:00 +0000

Effective stiffness for damaged plates

A Computational Model for Shape Memory Alloys

Thu, 11 Dec 2025 00:00:00 +0000

A Computational Model for Shape Memory Alloys

On permeable cracks in a piezoelectric ceramic. 2, Saturation strip model

Thu, 11 Dec 2025 00:00:00 +0000

On permeable cracks in a piezoelectric ceramic. 2, Saturation strip model

Structural Behavior of a Two Span Reinforced Concrete Box Girder Bridge Model, Vol. III -- Detailed Tables of Experimental and Analytical Results

Thu, 11 Dec 2025 00:00:00 +0000

Structural Behavior of a Two Span Reinforced Concrete Box Girder Bridge Model, Vol. III -- Detailed Tables of Experimental and Analytical Results

Effects of Humidity on the Time-Dependent Behavior of Concrete Under Sustained Loading

Thu, 11 Dec 2025 00:00:00 +0000

Effects of Humidity on the Time-Dependent Behavior of Concrete Under Sustained Loading

A fully coupled, electrochemical-magnetic theory with applications to solid-state battery materials

Fri, 31 Oct 2025 00:00:00 +0000

A fully coupled, electrochemical-magnetic theory with applications to solid-state battery materials

Seismic Demands on Nonstructural Components in Isolated Buildings: Peak Floor Accelerations and Recommendations for a Lower-Bound Seismic Design Force

Sun, 19 Oct 2025 00:00:00 +0000

U.S. building codes refer to the ASCE 7 Standard for the design of nonstructural components in seismically isolated buildings. The current edition, ASCE 7-22, includes provisions permitting the use of nonlinear response history analysis (NLRHA) to determine the seismic design force on nonstructural components. This enables the calculation of forces that more accurately reflect the peak floor acceleration (PFA) demands of isolated structures. However, the standard also mandates a lower-bound seismic design force [ASCE 7-22 Eq. 13.3-3] regardless of the approach used. This lower bound is anchored to the short-period design spectral acceleration (S_DS ), and it often governs in the case of seismically isolated buildings. Concerns regarding this requirement were formally raised in Public Comment 23 during the ASCE 7-22 development cycle.

This study was undertaken in response to this issue, with the goal of evaluating both the current lower-bound...

SEMM Graduate Program Primer: 2025

Mon, 28 Jul 2025 00:00:00 +0000

SEMM Graduate Program Primer: 2025

One-Way Shear Strength of Large Beams and Foundation ElementsContaining High-Strength Longitudinal Reinforcement

Mon, 9 Jun 2025 00:00:00 +0000

Mat foundations for high-rise buildings have traditionally been constructed as relatively thick members without shear reinforcement and with relatively low longitudinal reinforcement ratio. Laboratory tests demonstrate that unit shear strength decreases with increasing depth and with decreasing longitudinal reinforcement. These effects are represented in the one-way shear strength design equations of ACI 318-19, which results in significantly reduced nominal strength compared with design strengths that were successfully used for foundation mats for decades. The introduction of high-strength longitudinal reinforcement raises further questions about the effects of increased longitudinal reinforcement strains on one-way shear strength. To explore the effects of depth, reinforcement ratio, and high-strength reinforcement on one-way shear strength, a series of seven one-way shear laboratory tests were conducted. The tests were supplemented by nonlinear finite element studies to extrapolate...

Clarifying the representation of isotropic symmetric tensor-valued functions of two symmetric tensors

Thu, 6 Mar 2025 00:00:00 +0000

Clarifying the representation of isotropic symmetric tensor-valued functions of two symmetric tensors

Laboratory Tests, Analytical Modeling, and Design Model Development for Column-Foundation Connections with Headed Anchors

Thu, 5 Sep 2024 00:00:00 +0000

In collaboration with practicing structural engineers and experts in anchoring to concrete, the authors undertook a research project to explore the requirements for anchoring columns to reinforced concrete foundations. In early discussions it was realized that, while there were design procedures that were in use in different design offices, the design procedures differed from office to office and few of the methods had been verified by laboratory testing. Based on this knowledge, a series of laboratory tests was designed and carried out to develop benchmark data on the following types of column-foundation problems:

- Interior footings supporting columns in direct tension and anchored by multiple anchor bolts, either with or without additional footing transverse reinforcement to increase strength and deformation capacity.

- Interior footings supporting column in direct bending and anchored by multiple anchor bolts, either with or without additional footing transverse...

Approximate Constitutive Equations for the Short-Time Behavior of Nonlinear Viscoelastic Materials

Mon, 10 Jun 2024 00:00:00 +0000

Approximate Constitutive Equations for the Short-Time Behavior of Nonlinear Viscoelastic Materials

Effects of Microstructure on Deformation and Fracture of Portland Cement Paste

Mon, 10 Jun 2024 00:00:00 +0000

Effects of Microstructure on Deformation and Fracture of Portland Cement Paste

A Computational Procedure for Interaction of High-Speed Vehicles on Flexible Structures without Assuming Known Vehicle Nominal Motion

Mon, 10 Jun 2024 00:00:00 +0000

A Computational Procedure for Interaction of High-Speed Vehicles on Flexible Structures without Assuming Known Vehicle Nominal Motion

Application of a partially relaxed shape memory free energy function to bound the phase diagram and predict global microstructure evolution

Mon, 10 Jun 2024 00:00:00 +0000

Application of a partially relaxed shape memory free energy function to bound the phase diagram and predict global microstructure evolution

A fading memory theorem for materials with internal variables

Mon, 10 Jun 2024 00:00:00 +0000

A fading memory theorem for materials with internal variables

A Unified Approach to Finite Deformation Plasticity Based on the Use of Hyperelastic Constitutive Equations

Mon, 10 Jun 2024 00:00:00 +0000

A Unified Approach to Finite Deformation Plasticity Based on the Use of Hyperelastic Constitutive Equations

The Influence of the Geometric and Physical Parameters on the Dispersion of Axisymmetric Waves in Composite Rods

Mon, 10 Jun 2024 00:00:00 +0000

The Influence of the Geometric and Physical Parameters on the Dispersion of Axisymmetric Waves in Composite Rods

An Approximate Theory Governing Axisymmetric Motions in Transversely Isotropic Rods

Mon, 10 Jun 2024 00:00:00 +0000

An Approximate Theory Governing Axisymmetric Motions in Transversely Isotropic Rods

Phase Velocities of Axisymmetric Waves in Composite Rods when the Wave Length is Short

Mon, 10 Jun 2024 00:00:00 +0000

Phase Velocities of Axisymmetric Waves in Composite Rods when the Wave Length is Short

An Investigation of Elastic Waves with Imaginary and Complex Wave Numbers in Hollow Rods

Mon, 10 Jun 2024 00:00:00 +0000

An Investigation of Elastic Waves with Imaginary and Complex Wave Numbers in Hollow Rods

Structural Behavior of Mass Concrete Beams

Mon, 10 Jun 2024 00:00:00 +0000

Structural Behavior of Mass Concrete Beams

A Constitutive Theory for Elastic-Plastic Crystalline Simple Solids

Mon, 10 Jun 2024 00:00:00 +0000

A Constitutive Theory for Elastic-Plastic Crystalline Simple Solids

Theoretical Investigations of Bridge Deck Behavior

Mon, 10 Jun 2024 00:00:00 +0000

Theoretical Investigations of Bridge Deck Behavior

The Structural Properties of Ross Dam Mass Concrete

Mon, 10 Jun 2024 00:00:00 +0000

The Structural Properties of Ross Dam Mass Concrete

A Technique for the Calculation of Acceleration Waves in Nonlinear Viscoelastic Materials

Mon, 10 Jun 2024 00:00:00 +0000

A Technique for the Calculation of Acceleration Waves in Nonlinear Viscoelastic Materials

Durability of Cement Concrete In Sulfate Environment

Mon, 10 Jun 2024 00:00:00 +0000

Durability of Cement Concrete In Sulfate Environment

Behavior of Skew Highway Bridges

Mon, 10 Jun 2024 00:00:00 +0000

Behavior of Skew Highway Bridges

Some Stability Criteria for Nonlinear Hereditary Phenomena

Mon, 10 Jun 2024 00:00:00 +0000

Some Stability Criteria for Nonlinear Hereditary Phenomena

Tubular Joints Under Static and Alternating Load

Mon, 10 Jun 2024 00:00:00 +0000

Tubular Joints Under Static and Alternating Load

A Theory of Anisotropic Viscoelastic Sandwich Shells

Mon, 10 Jun 2024 00:00:00 +0000

A Theory of Anisotropic Viscoelastic Sandwich Shells

Creep of Concrete for Turkey Point Containment Vessel

Mon, 10 Jun 2024 00:00:00 +0000

Creep of Concrete for Turkey Point Containment Vessel

Progress Report -- Behavior of Prestressed Concrete Beams at Transfer

Mon, 10 Jun 2024 00:00:00 +0000

Progress Report -- Behavior of Prestressed Concrete Beams at Transfer

On Reciprocity in General Linear Viscoelasticity

Mon, 10 Jun 2024 00:00:00 +0000

On Reciprocity in General Linear Viscoelasticity

Creep Buckling of a Nonlinearly Viscoelastic Beam-Column

Mon, 10 Jun 2024 00:00:00 +0000

Creep Buckling of a Nonlinearly Viscoelastic Beam-Column

A Uniqueness Theorem for Aging Viscoelastic Bodies

Mon, 10 Jun 2024 00:00:00 +0000

A Uniqueness Theorem for Aging Viscoelastic Bodies

Equations for Thermoelastic and Viscoelastic Cylindrical Sandwich Shells

Mon, 10 Jun 2024 00:00:00 +0000

Equations for Thermoelastic and Viscoelastic Cylindrical Sandwich Shells

The Propagation of Shock Waves in Nonlinear Viscoelastic Materials

Mon, 10 Jun 2024 00:00:00 +0000

The Propagation of Shock Waves in Nonlinear Viscoelastic Materials

Numerical simulation of case 2 diffusion in one dimension

Mon, 10 Jun 2024 00:00:00 +0000

Numerical simulation of case 2 diffusion in one dimension

Physics-based linear regression for high-dimensional forward uncertainty quantification

Wed, 29 May 2024 00:00:00 +0000

We introduce linear regression using physics-based basis functions optimized through the geometry of an inner product space. This method addresses the challenge of surrogate modeling with high-dimensional input, as the physics-based basis functions encode problem-specific information. We demonstrate the method using a proof-of-concept nonlinear random vibration example.

Forced vibration tests: North Fork Dam, California, October 1974