## The significance of relaxation time is firstly highlighted to reveal the evolution mechanism of viscoelasticity of creep and relaxation response by constructing equivalence between rheological responses of constant-order fractional Maxwell model and that of time-varying viscosity Maxwell model. 緩和時間の重要性を最初に強調し、一定次数のフラクショナルマクスウェルモデルのレオロジー応答と時変粘度マクスウェルモデルのレオロジー応答の間の等価性を構築することにより、クリープと緩和応答の粘弾性の進化メカニズムを明らかにします。

A Caputo variable-order fractional damage creep model for sandstone considering effect of relaxation time

## A three-parameter model is proposed based on the basic definition of fractional derivative viscoelasticity and time-varying viscosity. 分数微分粘弾性と時変粘度の基本的な定義に基づいて、3パラメータモデルを提案します。

A fractional derivative-based numerical approach to rate-dependent stress–strain relationship for viscoelastic materials

## Combined with the Herschel–Bulkley model with time-varying viscosity and the uniform flow equation, the analytical solution of the grouting fracturing height (GFH) for the post-grouted at the pile tip and considering the time-varying viscosity is derived under certain assumptions. 時変粘度と均一流動方程式を使用したHerschel-Bulkleyモデルと組み合わせて、パイル先端でのグラウト後のグラウト破砕高さ（GFH）の解析解と、時変粘度を考慮したものを特定の仮定の下で導き出します。 。

Analytical solution of grouting fracturing height for the post-grouted bored piles using the Herschel–Bulkley model with time-varying viscosity

## The fractional derivative models with time-varying viscosity have been used in characterizing creep or relaxation properties of different viscoelastic material, and many combination models were pre. さまざまな粘弾性材料のクリープまたは緩和特性の特性評価に、粘度が時間とともに変化する分数微分モデルが使用されており、多くの組み合わせモデルが事前に使用されていました。

Fractional derivative modeling of time-varying viscosity materials considering initial loading ramp in real experiments

## A time-varying viscosity model was derived and the influence of the initial temperature on gel time was analyzed. 時変粘度モデルを導き出し、ゲル時間に対する初期温度の影響を分析しました。

Experimental Study on Viscosity Characteristics of Expanding Polymer Grout